Murphy was right: things will go wrong in any given situation if you only give them a chance. Therefore this session will discuss ways of limiting the risk of things going wrong in your application.
Errors, Exceptions & Logging (PHP Hants Oct '13)James Titcumb
The talk is designed to give an entry-level introduction to how you should be handling errors, exceptions and how to effectively log in an application.
This document discusses error handling in PHP. It begins by explaining the different types of errors in PHP - notices, warnings, and fatal errors. It then provides examples of how to control which errors are displayed to the user, define custom error handlers, trigger custom errors, and use exception handling with try/catch blocks. The key aspects covered are how to intercept errors gracefully and provide user-friendly messages.
This document discusses proper use of exceptions in PHP programming. It defines common types of exceptions like logic exceptions and runtime exceptions. It recommends using exceptions instead of error flags for better control flow. Exceptions should provide descriptive error messages and stack traces. Exceptions should be thrown in the layer they occur and standard SPL exceptions used where possible. Unit tests can expect specific exception types and messages. Exceptions improve predictability over errors and make problems easier to find and fix.
The document discusses handling errors and exceptions in PHP. It defines what errors and exceptions are, describes different types of PHP errors, and ways to handle them. It also covers setting up error handling functions and using exceptions with try/catch blocks to gracefully handle errors and exceptions in code.
This document discusses error reporting in PHP. It defines an error as a type of mistake, such as an incorrect program state. There are three main categories of errors in PHP: informational errors, actionable errors, and fatal errors. The document also discusses how to enable errors, set the error reporting level, suppress errors, create custom error handlers, and trigger errors programmatically.
This document discusses error management in PHP. It describes different types of errors like compile-time errors, fatal errors, recoverable errors, and warnings. It also discusses how to configure error reporting using php.ini directives like error_reporting, display_errors, and log_errors. Additionally, it explains how to handle errors programmatically using set_error_handler() and exception handling. The document provides an example of throwing and catching exceptions using try/catch blocks. Finally, it discusses lazy loading of classes using the __autoload() function in PHP.
This document summarizes a lightning talk on exceptions in Perl. It discusses defensive programming and the need to anticipate errors or incorrect input. It covers detecting exceptions, classifying exceptions by type and severity, and reporting exceptions. Finally, it reviews different methods for handling exceptions in Perl, including return codes, eval/die/rethrow, and various CPAN exception modules like Class::Throwable that provide try/catch functionality similar to other languages.
This is a presentation compiled by Mihai Gutuleac, on the topic of "Debugging methods". It presents a list of useful and handy tools and error handler frameworks which will help web developers to easily find out and debug the errors and also to handle more appropriate the raised exceptions in their web applications.
The document provides an introduction to PHP including:
- PHP is an open source scripting language especially suited for web development and can be embedded into HTML.
- PHP code is executed on the server, generating HTML which is then sent to the client.
- PHP supports variables, operators, conditional statements, arrays, loops, functions, and forms. Key functions like $_GET and $_POST are used to collect form data submitted via GET and POST methods respectively.
This document provides an introduction to PHP (Hypertext Preprocessor), which is a server-side scripting language used for web development. It discusses three-tiered websites, server-side scripting, and some key aspects of PHP including its history, basic syntax, variables, data types, functions, and conditional statements. PHP allows for dynamic content generation, computational processing, database access, and more on the server side to create interactive websites and web applications.
This document provides an introduction to PHP basics, including variables, data types, operators, and errors. It discusses defining variables with the $ sign and rules for variable names. It also outlines different data types like strings, integers, floats, booleans, arrays, and objects. The document explains different types of operators for performing operations on variables and values. Finally, it describes common types of errors in PHP like syntax errors, logical errors, and run-time errors.
This document discusses errors, exceptions, and logging in PHP. It describes the different types of PHP errors and how exceptions can be used to handle errors and failures more object-oriented way. Exceptions allow for more descriptive error handling than basic errors. The document also recommends logging errors and exceptions for easier debugging. Various logging options for PHP are presented, including Monolog and other libraries that support the PSR-3 logging standard. Capturing errors, exceptions, and logging messages is discussed.
The document provides an introduction to PHP, including:
- PHP is a scripting language originally designed for web pages and runs on most operating systems.
- PHP syntax is quite easy if familiar with C-type languages, and it is designed to output to browsers but can also create CLI apps.
- Variables, constants, naming conventions, data types, and basic control structures like if/else, while loops and foreach loops are discussed.
- Combining PHP with XHTML is covered, recommending using functions and an object-oriented approach.
- User input via forms is mentioned, linking to a resource on processing forms with PHP.
I explore various questions pertaining to a medley of topics. Initially the talk focuses on some undocumented fun to be had with identifiers. Attention next shifts to PHP’s comma operator and considers whether it even merits that designation. The main topic, which follows, derives from an example of some very questionable PHP logic. To avoid making a hasty, superficial judgment will entail discovering the hidden story behind PHP’s truth values. Particularly fascinating is the influence of other languages on their development and meaning. This segment also peers into PHP’s internal workings in a friendly fashion for non-C programmers. Novices as well as senior developers are all welcome; there’s plenty of code for everyone! Come learn about what surprises await you.
Correctly understanding the eight data types in PHP is essential to a solid foundation in development. Come refresh your knowledge of the scalar types, compound types, and special data types used in PHP, and learn about proper usage of each. Review type juggling, learn some common data type traps to avoid, and how to code defensively to prevent having the data type of a variable change unexpectedly. Finally learn how unit tests can help verify that code is handling data types correctly.
1) The document provides an introduction to PHP basics including variables, data types, operators, and form handling. It explains how to store data in variables, assign values, destroy variables, and inspect variable contents.
2) Various PHP data types are covered such as integers, floats, strings, booleans, and NULL. Arithmetic, comparison, logical and assignment operators are also explained.
3) The document demonstrates how to manipulate variables using operators, perform arithmetic operations, concatenate strings, compare variables, and perform logical tests.
Constants in PHP are like variables that cannot change value once defined. Constants are defined using the define() function, which takes a name, value, and optional case sensitivity parameter. Constants can store simple values as well as arrays. Unlike variables, constants are globally accessible across any PHP script.
The document provides an overview of PHP concepts including variables, data types, functions, and more. It discusses PHP syntax like tags and comments. Key points covered include:
- PHP is a scripting language widely used for web development and is free to use
- Variables store and manipulate data in PHP and have no predefined type
- PHP has several data types including integers, doubles, strings, arrays, and objects
- Functions define reusable blocks of code and can accept parameters
- echo and print output content, with echo being marginally faster
This document provides an overview of basic PHP concepts including:
- PHP syntax with opening and closing tags <?php ?>
- Language constructs like echo and print for outputting strings
- Variables, data types, operators, and functions
- Conditional statements like if/else and switch statements
- Looping with while, do/while, and for loops
- Arrays for storing multiple values
- Form handling with $_GET and $_POST superglobals
- Connecting to databases using MySQLi or PDO extensions
The document covers PHP fundamentals and is intended as an introduction for learning the language. It explains core PHP concepts through examples and explanations in a step-by-step manner over 47 sections
This document provides an introduction and overview of PHP, including what PHP is, what is needed to use it, basic syntax, variables, data types, operators, control structures like if/else and loops, functions, and includes/requires. Key points covered include PHP being a server-side scripting language, basic syntax using <?php ?> tags, common variable types and scoping, operators for arithmetic, comparison and logic, and common control structures for conditional execution and repetition.
Presentation on major features of PHP 5.3 for the July 2009 Baltimore/Washington DC PHP Meetup. It touches on major features and changes that were made in the PHP 5.3 series
The document discusses hashes in Perl programming. It explains that hashes allow the storage of key-value pairs and do not maintain order. It provides examples of creating a hash, accessing values using keys, and iterating through keys and values. It also discusses using hashes to store the genetic code and amino acid translations.
The document discusses various types of operators in PHP including arithmetic, assignment, comparison, increment/decrement, logical, string, and array operators. It provides examples of common operators like addition, subtraction, equality checking, concatenation and describes what each operator does.
Developing highly scalable applications with Symfony and RabbitMQAlexey Petrov
This document discusses developing highly scalable applications using Symfony and RabbitMQ. It begins with an overview of using queues to process asynchronous tasks and addresses common problems that arise. Later sections discuss more advanced RabbitMQ concepts like clustering, federation and shoveling to distribute tasks across multiple servers for scaling. The document concludes with integrating Symfony and RabbitMQ by installing the bundle and configuring producers and consumers.
This document summarizes a lightning talk on exceptions in Perl. It discusses defensive programming and the need to anticipate errors or incorrect input. It covers detecting exceptions, classifying exceptions by type and severity, and reporting exceptions. Finally, it reviews different methods for handling exceptions in Perl, including return codes, eval/die/rethrow, and various CPAN exception modules like Class::Throwable that provide try/catch functionality similar to other languages.
This is a presentation compiled by Mihai Gutuleac, on the topic of "Debugging methods". It presents a list of useful and handy tools and error handler frameworks which will help web developers to easily find out and debug the errors and also to handle more appropriate the raised exceptions in their web applications.
The document provides an introduction to PHP including:
- PHP is an open source scripting language especially suited for web development and can be embedded into HTML.
- PHP code is executed on the server, generating HTML which is then sent to the client.
- PHP supports variables, operators, conditional statements, arrays, loops, functions, and forms. Key functions like $_GET and $_POST are used to collect form data submitted via GET and POST methods respectively.
This document provides an introduction to PHP (Hypertext Preprocessor), which is a server-side scripting language used for web development. It discusses three-tiered websites, server-side scripting, and some key aspects of PHP including its history, basic syntax, variables, data types, functions, and conditional statements. PHP allows for dynamic content generation, computational processing, database access, and more on the server side to create interactive websites and web applications.
This document provides an introduction to PHP basics, including variables, data types, operators, and errors. It discusses defining variables with the $ sign and rules for variable names. It also outlines different data types like strings, integers, floats, booleans, arrays, and objects. The document explains different types of operators for performing operations on variables and values. Finally, it describes common types of errors in PHP like syntax errors, logical errors, and run-time errors.
This document discusses errors, exceptions, and logging in PHP. It describes the different types of PHP errors and how exceptions can be used to handle errors and failures more object-oriented way. Exceptions allow for more descriptive error handling than basic errors. The document also recommends logging errors and exceptions for easier debugging. Various logging options for PHP are presented, including Monolog and other libraries that support the PSR-3 logging standard. Capturing errors, exceptions, and logging messages is discussed.
The document provides an introduction to PHP, including:
- PHP is a scripting language originally designed for web pages and runs on most operating systems.
- PHP syntax is quite easy if familiar with C-type languages, and it is designed to output to browsers but can also create CLI apps.
- Variables, constants, naming conventions, data types, and basic control structures like if/else, while loops and foreach loops are discussed.
- Combining PHP with XHTML is covered, recommending using functions and an object-oriented approach.
- User input via forms is mentioned, linking to a resource on processing forms with PHP.
I explore various questions pertaining to a medley of topics. Initially the talk focuses on some undocumented fun to be had with identifiers. Attention next shifts to PHP’s comma operator and considers whether it even merits that designation. The main topic, which follows, derives from an example of some very questionable PHP logic. To avoid making a hasty, superficial judgment will entail discovering the hidden story behind PHP’s truth values. Particularly fascinating is the influence of other languages on their development and meaning. This segment also peers into PHP’s internal workings in a friendly fashion for non-C programmers. Novices as well as senior developers are all welcome; there’s plenty of code for everyone! Come learn about what surprises await you.
Correctly understanding the eight data types in PHP is essential to a solid foundation in development. Come refresh your knowledge of the scalar types, compound types, and special data types used in PHP, and learn about proper usage of each. Review type juggling, learn some common data type traps to avoid, and how to code defensively to prevent having the data type of a variable change unexpectedly. Finally learn how unit tests can help verify that code is handling data types correctly.
1) The document provides an introduction to PHP basics including variables, data types, operators, and form handling. It explains how to store data in variables, assign values, destroy variables, and inspect variable contents.
2) Various PHP data types are covered such as integers, floats, strings, booleans, and NULL. Arithmetic, comparison, logical and assignment operators are also explained.
3) The document demonstrates how to manipulate variables using operators, perform arithmetic operations, concatenate strings, compare variables, and perform logical tests.
Constants in PHP are like variables that cannot change value once defined. Constants are defined using the define() function, which takes a name, value, and optional case sensitivity parameter. Constants can store simple values as well as arrays. Unlike variables, constants are globally accessible across any PHP script.
The document provides an overview of PHP concepts including variables, data types, functions, and more. It discusses PHP syntax like tags and comments. Key points covered include:
- PHP is a scripting language widely used for web development and is free to use
- Variables store and manipulate data in PHP and have no predefined type
- PHP has several data types including integers, doubles, strings, arrays, and objects
- Functions define reusable blocks of code and can accept parameters
- echo and print output content, with echo being marginally faster
This document provides an overview of basic PHP concepts including:
- PHP syntax with opening and closing tags <?php ?>
- Language constructs like echo and print for outputting strings
- Variables, data types, operators, and functions
- Conditional statements like if/else and switch statements
- Looping with while, do/while, and for loops
- Arrays for storing multiple values
- Form handling with $_GET and $_POST superglobals
- Connecting to databases using MySQLi or PDO extensions
The document covers PHP fundamentals and is intended as an introduction for learning the language. It explains core PHP concepts through examples and explanations in a step-by-step manner over 47 sections
This document provides an introduction and overview of PHP, including what PHP is, what is needed to use it, basic syntax, variables, data types, operators, control structures like if/else and loops, functions, and includes/requires. Key points covered include PHP being a server-side scripting language, basic syntax using <?php ?> tags, common variable types and scoping, operators for arithmetic, comparison and logic, and common control structures for conditional execution and repetition.
Presentation on major features of PHP 5.3 for the July 2009 Baltimore/Washington DC PHP Meetup. It touches on major features and changes that were made in the PHP 5.3 series
The document discusses hashes in Perl programming. It explains that hashes allow the storage of key-value pairs and do not maintain order. It provides examples of creating a hash, accessing values using keys, and iterating through keys and values. It also discusses using hashes to store the genetic code and amino acid translations.
The document discusses various types of operators in PHP including arithmetic, assignment, comparison, increment/decrement, logical, string, and array operators. It provides examples of common operators like addition, subtraction, equality checking, concatenation and describes what each operator does.
Developing highly scalable applications with Symfony and RabbitMQAlexey Petrov
This document discusses developing highly scalable applications using Symfony and RabbitMQ. It begins with an overview of using queues to process asynchronous tasks and addresses common problems that arise. Later sections discuss more advanced RabbitMQ concepts like clustering, federation and shoveling to distribute tasks across multiple servers for scaling. The document concludes with integrating Symfony and RabbitMQ by installing the bundle and configuring producers and consumers.
The document discusses characteristics of microservice architectures. It defines microservices as independently deployable services that communicate through lightweight mechanisms like HTTP APIs. Key characteristics include: componentization via services; organization around business capabilities rather than technology; treating services as products with long-term support; decentralized governance, data, and infrastructure; and designing for failure and evolutionary development. The document also compares microservices to monoliths and alternative approaches like self-contained systems.
Astricon 2016 - Scaling ARI and ProductionDan Jenkins
The document discusses scaling and productionizing applications built with the Asterisk Realtime Communications Interface (ARI). It outlines different approaches to scaling an ARI application, from running a single process on one Asterisk server to using multiple processes across many Asterisk servers with an ARI proxy and message bus. The document emphasizes important considerations for ARI applications in production like latency, logging, metrics, inter-process communication and failure handling. It also provides examples of architectures using an ARI proxy and message bus to scale ARI applications across multiple Asterisk servers.
Cupping notes for 2015 crop - washed Yirgacheffe Chelelektu coffee from Ethiopia. This coffee was cupped and purchased after our 2015 trip to Ethiopia.
Chicago AWS user group meetup - May 2014 at CohesiveAWS Chicago
Chicago AWS user group meetup - May 2014 at Cohesive
All slides from the May 2014 Meetup. Talks included:
• "Mining crypto currency on AWS spot instance" - Scott VanDenPlas, Engineer at el el see @scottvdp
• "HA for healthcare" - Ryan Koop, Director of Products & Marketing, Cohesive @ryankoop
• "Using AWS for HA at BrightTag" - Matt Kemp, Engineer of Things™ at BrightTag @mattkemp
• So nice, he's talking twice. - Scott VanDenPlas, Engineer at el el see @scottvdp
Join us again June 24 at Mediafly and in July back at Cohesive!
Automated Infrastructure Security: Monitoring using FOSSSonatype
Madhu Akula, Automation Ninja
We can see attacks happening in real time using a dashboard. By collecting logs from various sources we will monitor & analyse. Using data gleaned from the logs, we can apply defensive rules against the attackers. We will use AWS for managing and securing the infrastructure discussed in our talk.
For most network engineers who monitor the perimeter for malicious content, it is very important to respond to an imminent threat originating from outside the boundaries of their network. Having to crunch through all the logs that the various devices (firewalls, routers, security appliances etc.) spit out, correlating that data and in real time making the right choices can prove to be a nightmare. Even with the solutions already available in the market.
As I have experienced this myself, as part of the Internal DevOps and Incident Response Teams, in several cases, I would want to create a space for interested folks to design, build, customise and deploy their very own FOSS based centralised visual attack monitoring dashboard. This setup would be able to perform real time analysis using the trusted ELK stack and visually denote what popular attack hotspots exist on a network.
Gaurav dev ops (AWS, Linux, Automation-ansible, jenkins:CI and CD:Ansible)Gaurav Srivastav
A determined and resourceful professional having experience for Linux system administration, and AWS DevOps. Now, presently I am functioning with "Nearet" as AWS DevOps Engineer.
I am responsible for building out and improving the reliability and maintain the performance of applications and cloud infrastructure deployed on "Amazon Web Services", focusing on automation tools availability and performance like Ansible, Elasticsearch, New relic, Jenkins etc.
I am optimistic about my skills and am convinced my knowledge would make me well suited for this position. I believe in competitive environments and possess exceptional abilities to work as a System/AWS DevOps Engineer.
The document discusses various factors that affect elk populations, including their habitat, diet, reproduction rates, and mortality risks. Elk typically live in open woodlands and forested areas from sea level to 3,000 meters in elevation. They eat plants, roots, leaves, and fungi. Elk mate in late September to early October and usually have one offspring per year. Their populations are affected by hunting and diseases. Clean water sources and adequate plant growth are important for supporting healthy elk herds.
Kinesis to Kafka Bridge is a Samza job that replicates AWS Kinesis to a configurable set of Kafka topics and vice versa. It enables integration between AWS and the rest of LinkedIn. It supports replicating streams in any LinkedIn fabric, any AWS account, and any AWS region. DynamoDB Stream to Kafka Bridge is built on top of Kinesis to Kafka Bridge. It enables data replication from AWS DynamoDB to LinkedIn. In this presentation we will talk about how we designed the system and how we use it in LinkedIn.
Docker is quickly becoming an invaluable development and deployment tool for many organizations. Come and spend the day learning about what Docker is, how to use it, how to integrate it into your workflow, and build an environment that works for you and the rest of your team. This hands-on tutorial will give you the kick-start needed to start using Docker effectively.
MyHeritage BackEnd group was built to scale to support 77 million users, 27 million family trees containing over 1.6 billion individuals, and over 6 billion historical documents.
With big data comes big challenges and this presentation explains the structure, the methodology and the technologies that support scaling up.
The presentation covers:
• How cross R&D continuous deployment and R&D structure supports scalability
• Sharding techniques
• Cassandra usage at MyHeritage
• Our search engine scaling structure
Python Pants Build System for Large CodebasesAngad Singh
This talk is geared towards Infrastructure and system engineers who are interested in learning about structuring a large monorepo codebase, consisting of multiple micro services that share many dependencies. This talk will introduce Pants as a build system for such large monolithic codebase and how it ties with today’s container ecosystem principles.
https://pycon.sg/schedule/presentation/73/
This document provides an overview of the technical architecture for a cloud platform. It discusses various components including source control, continuous integration/build services, artifact storage, deployment services, infrastructure as code, orchestration, configuration/vaults, logging, monitoring, service discovery, load balancing, and platform services. For each component, it outlines relevant features, example solutions, and standards. The overall goal is to provide guidance on architecting a cloud platform that can build, deploy, host, run, and monitor application services.
At UCR, automation is a part of everything we do. When designing a new architecture and the set of new processes for our new Java based development environment we came up with a set of continuous integration and deployment tools to enable our developers to write and deploy their own applications in a flexible and secure environment.
Paragraf tersebut membahas perspektif filosofis dari penelitian kualitatif. Penelitian kualitatif didasarkan pada filsafat fenomenologi dan berfokus pada manusia sebagai subjek utama. Terdapat beberapa aliran filsafat yang mendasari penelitian kualitatif seperti fenomenologi, interaksionisme simbolik, dan etnometodologi.
Nagios Conference 2014 - Fernando Covatti - Nagios in Power Transmission Util...Nagios
Fernando Covatti's presentation on Nagios in Power Transmission Utilities.
The presentation was given during the Nagios World Conference North America held Oct 13th - Oct 16th, 2014 in Saint Paul, MN. For more information on the conference (including photos and videos), visit: http://go.nagios.com/conference
The document discusses concerns around designing microservices. It begins with an overview of microservices, noting they are an approach to building distributed applications that are independently developed and deployed, contain a single context or responsibility, and communicate simply using technologies like HTTP or message queues. The document then covers advantages like loose coupling, ability to use the right tool for each job, and facilitating continuous delivery. It also discusses challenges like the complexity of distributed systems and potential for services to fail. Finally, it outlines considerations for service design, including having each service represent a single bounded context and authority, being resilient, fast, and efficient.
This session is about best practices and awareness to server specific programming and how to avoid it. How to write code that will run on any server with any configuration – things like file functions, directories, locale issues, EGPCS; Maybe even design patterns to help do that.
Logging is an absolute must for any API or web application, but when starting out, questions such as "how can we do it without disrupting everything else" and "what is the easiest way to log" often come up. We’re going to examine a tried and tested method to carry out high-performance, low-latency logging using the power of RabbitMQ to ensure minimal impact to the performance of your runtime application. The talk will show you that a really great logging architecture is a low-cost investment in your application that will definitely pay off in the long run.
Lesser Known Security Problems in PHP ApplicationsZendCon
When the security of PHP applications is in focus usually standard XSS vulnerabilities, SQL Injections, Remote File Inclusions, Header Injections and CSRF are discussed. However there are a number of different vulnerability classes and non obvious exploitation paths that are as dangerous but lesser known. This talk will give an insight in such vulnerabilities and how to defend against them.
PHP provides default error handling that displays error messages to the browser. It is important to implement custom error handling in scripts to avoid unprofessional errors being displayed and security risks. This document discusses different PHP error handling methods like using die() statements, creating custom error handlers with the set_error_handler() function, and triggering errors with trigger_error(). It also covers error logging methods like sending error messages via email with error_log().
ASP.NET 05 - Exception Handling And Validation ControlsRandy Connolly
Exception handling in ASP.NET allows applications to gracefully handle errors using try-catch blocks to handle exceptions at the class level, the Page_Error event to handle errors at the page level, and the Application_Error event to handle errors globally. Validation controls like RequiredFieldValidator and CompareValidator validate user input on both the client-side and server-side to ensure proper data and reduce round trips to the server. Custom error pages can be configured in the Web.config file to handle different HTTP error codes like 404 and 500 errors.
This document provides an overview of PHP basics including:
- How a web request is processed with PHP
- PHP syntax and tags
- Data types like scalars, arrays, and objects
- Variables, naming conventions, and scopes
- Language constructs like if/else, switch, loops, and functions
- Operators, error handling, and best practices for writing clear code
This document discusses error handling techniques in various programming languages and frameworks including @Formulas, JavaScript, Java, Lotusscript, and XPages. It provides examples of try/catch blocks to handle exceptions, throwing custom errors, and registering general error handlers. The key approaches discussed are anticipating errors, using defensive programming, throwing and catching custom exceptions, and handling errors at different levels to provide user-friendly messages.
With this presentation I hope to show that using SPL doesn't require a PHD and that it really benefits your application design, maintainability and implements best practices to solve common development problems.
Low Latency Logging with RabbitMQ (PHP London - 4th Sep 2014)James Titcumb
Logging is an absolute must for any API or web application, but when starting out, questions such as "how can we do it without disrupting everything else" and "what is the easiest way to log" often come up. We’re going to examine a tried and tested method to carry out high-performance, low-latency logging using the power of RabbitMQ to ensure minimal impact to the performance of your runtime application. The talk will show you that a really great logging architecture is a low-cost investment in your application that will definitely pay off in the long run.
This document summarizes Steven Feuerstein's presentation on managing errors effectively in Oracle PL/SQL. Some key points:
1) Defining exceptions, raising exceptions, and handling exceptions are important PL/SQL features for error management. Best practices include avoiding hard-coded errors and using reusable error components.
2) PL/SQL has some limitations for representing errors that can be addressed through object-oriented approaches like defining error tables.
3) Standardizing on common error handling procedures and logging mechanisms prevents code repetition and ensures consistency across an application.
This document discusses exception handling in code. It begins with an overview of exceptions, including what they are, how to prevent, log, and check for them. It then discusses specific types of exceptions like checked, runtime, and errors. The rest of the document dives deeper into topics like causes of exceptions, global exception handling, using standard exceptions, silent exceptions to avoid, and testing exceptions. It provides examples of code and techniques for proper exception handling.
This document provides an overview of debugging techniques for PHP, including:
1. PHP functions for debugging like echo(), var_dump(), print_r(), debug_backtrace() and getting error types.
2. Configuring error logging in php.ini and techniques like backtracing and divide and conquer.
3. The human aspects of debugging like tiredness, confidence, and focus.
Exception handling & logging in Java - Best Practices (Updated)Angelin R
This document discusses best practices for logging and exception handling in Java. For logging, it recommends using Log4j and following practices like declaring loggers as static and final, only logging method entries and exits, and avoiding redundant logs. For exception handling, it recommends handling exceptions close to their origin, logging exceptions only once, not catching the base Exception class, handling exceptions before responding to clients, and documenting exceptions in Javadoc. It provides examples and exceptions to these rules for specific cases.
Exceptions are a powerful mechanism for centralized processing of errors and exceptional situations. This mechanism replaces the procedure-oriented method of error handling in which each function returns a code indicating an error or a successful execution.
PECL Picks - Extensions to make your life betterZendCon
This document provides information about various PHP extensions available through PECL (PHP Extension Community Library). It introduces the author and their background, describes what PECL is and provides a brief history. It then discusses the current status of PECL, future plans, and how individuals can get involved. Finally, it highlights and provides code examples for several popular and useful PECL extensions, including APC, Memcache, Imagick, HTTP, UploadProgress and others.
The document discusses exception handling in C and C++. It covers exception fundamentals, and techniques for handling exceptions in C such as return values, global variables, goto statements, signals, and termination functions. It also discusses exception handling features introduced in C++ such as try/catch blocks and exception specifications.
This session of The Ajax Experience 2008 takes a look at the latest features in both Prototype and script.aculo.us, including custom events and how to leverage them, method wrapping for AOP-style programming, sprockets, the refactorings and improvements on Ajax, scheduling and the DOM, the new effects engine, and more.
We wrap up with an overview of the community landscape for these libraries, looking at major helpful resources, prominent peripheral frameworks, and seeing what the future looks like for both Prototype and script.aculo.us.
This document discusses object oriented PHP concepts including classes, inheritance, overriding functions, error handling, and file uploads. It provides examples of creating a class with methods, instantiating objects, extending classes, overriding parent methods, and defining custom error handling functions. It also demonstrates how to upload files in PHP by handling the file on the server, checking for errors, and moving the file to a target directory.
Ralph Schindler gives an overview of extending the Zend Framework tool Zend_Tool. He describes Zend_Tool's purpose for rapid application development of Zend Framework projects. The talk outlines Zend_Tool's architecture including the Zend_Tool_Framework component for dispatching tool requests and the Zend_Tool_Project component for exposing project-specific capabilities. Schindler discusses various extension points for Zend_Tool like implementing providers, metadata, and interactivity. He provides examples of extending Zend_Tool to load profiles, create resources, and regenerate code.
This document provides an overview of IBM i tutorial events occurring at ZendCon '09, including PHP sessions on Tuesday and an IBM i networking reception. It introduces Mike Pavlak, the Solution Consultant giving the tutorial, and reviews tools for developing PHP applications on IBM i like Zend Core, Studio, and Server. The tutorial agenda includes using toolkit functions, debugging with Zend Platform, and integrating procedural PHP with the Zend Framework.
This document summarizes what's new for PHP on Windows, including improved performance and reliability through use of FastCGI for IIS and the WinCache extension. It outlines the history of PHP on Windows and how support has improved over time, with Microsoft now promoting PHP as part of its web platform and providing tools to easily install PHP and applications. Key resources are also listed for additional information on using PHP on Windows.
The document discusses PHP and platform independence in the cloud. It describes different definitions of the cloud and benefits like scalability. It notes that applications should be written for the cloud using cloud services. Moving applications between cloud providers is difficult due to API differences. The PHPilosophy is presented as using abstraction to create common interfaces for cloud services like storage, documents, and queues to provide platform independence when using different cloud providers.
This document summarizes PHP's Internationalization (intl) extension, which provides localization and internationalization functions based on the ICU library. It covers key classes like Collator for string comparison, NumberFormatter for number formatting, MessageFormatter for message formatting, and IntlDateFormatter for date/time formatting. Functions for locales, Unicode normalization, grapheme handling, and IDN are also described. The goal of the intl extension is to provide robust i18n/l10n capabilities to PHP applications using standardized ICU implementations.
Cloud Computing: The Hard Problems Never Go AwayZendCon
This document discusses some of the hard problems that persist with cloud computing, including vendor lock-in, transactions and concurrency, security, and identity management. It notes that while cloud computing offers benefits like scalability and reduced costs, challenges around governance, data distribution, and database design remain. The document advocates understanding the limitations and capabilities of different cloud technologies to choose the right solutions for specific needs.
Planning for Synchronization with Browser-Local DatabasesZendCon
Synchronization between browser-local databases and central servers is a complex problem that requires careful planning. The speaker outlines some of the challenges, including data subsetting, adding and deleting records, handling conflicts, and ensuring referential integrity and application upgrades work smoothly. Proper testing under realistic conditions is emphasized. The talk aims to demonstrate that synchronization is difficult and it is best to plan the strategy upfront.
This document discusses Magento, an open-source e-commerce platform built on the Zend Framework. It outlines how Magento utilizes around 15 Zend Framework components for functionality like controllers, views, caching, internationalization and databases. It also describes how additional Zend Framework components may be integrated in the future and how modules can extend and overwrite core Magento classes and functionality.
This document discusses enterprise security as it relates to PHP applications. It begins by defining an enterprise as a high-stakes endeavor with significant scope, money, purpose, or impact. Enterprise security specifically aims to prevent harmful security events for applications where the stakes are high, with real risks and severe consequences of failure. The document then outlines some of the key differences between enterprise security and traditional low-stakes PHP application security, including dedicated security teams, formal standards, and a focus on risk management. It provides guidance for PHP developers on understanding enterprise security requirements and effectively partnering with security teams.
This document discusses several options for accessing IBM i data from PHP applications, including:
1. The i5 Toolkit which provides native functions for connecting to and querying IBM i data directly from PHP applications.
2. The toolkit includes functions for record-level access, command execution, program calls, and more.
3. Code examples are provided for using the toolkit's functions to open an IBM i file, retrieve field names, and fetch records to display in an HTML table.
Zend Core on IBM i - Security ConsiderationsZendCon
The document discusses security considerations for Zend Core for IBM i. It provides two options for securing the system: 1) guarantee system security by unplugging and locking the system in a vault or 2) take a security journey to protect valuable information assets from outsiders like hackers and insiders like corporate criminals. The document then discusses steps to understand and protect various components of Zend Core like directories, files, programs, user profiles, and configurations. It provides recommendations to make the Apache and PHP configurations more secure through access controls, encryption, and logging.
Application Diagnosis with Zend Server TracingZendCon
This document discusses Application Diagnosis with Zend Server Tracing. It provides an overview of debugging applications, introduces Zend Server Tracing as a better way to debug than var_dump, and covers how Zend Server Tracing works including code tracing, monitoring modes, and settings. It provides examples of using code tracing to diagnose uncaught exceptions, destructors, prepared statements, and memory usage. The document encourages using Zend Server Tracing in development, testing, staging, and production environments.
Insights from the Experts: How PHP Leaders Are Transforming High-Impact PHP A...ZendCon
This document summarizes a presentation about high-impact PHP development. It discusses how PHP is thriving for enterprise use due to improvements in its ecosystem like tooling, integration with other technologies, and best practices. Case studies are presented of companies successfully using PHP, and partnerships between Zend and other companies are announced to further PHP's reach. The document calls developers to evangelize PHP within their organizations.
Solving the C20K problem: Raising the bar in PHP Performance and ScalabilityZendCon
This document summarizes a presentation given by Luxi Chidambaran of Oracle on solving the C20K problem of scaling PHP applications. It discusses how the Oracle 11g Database Resident Connection Pool (DRCP) allows PHP applications to connect to the database in a way that supports tens of thousands of concurrent connections using minimal system resources. It provides an overview of DRCP and how the enhanced OCI8 PHP extension connects to leverage DRCP. Performance benchmarks are presented showing significant increases in throughput and reductions in memory usage compared to non-DRCP connections.
PHP, LAMP, Windows, ASP.NET ?????? Sometimes you can't choose just one.
In this session, long time PHP developer and Microsoft MisfitGeek with explore the plethora of ways you can make PHP and ASP.NET interoperate.
In this session we will take a look at several different methods for building tiered applications. Some of the tiering methodologies include Soap, XML-RPC, RESTful and multiple language architectures. The purpose of this talk will not be to determine which methodology is best, but instead will try to provide an unbiased view of the pros and cons of each.
Make your PHP Application Software-as-a-Service (SaaS) Ready with the Paralle...ZendCon
Extend the market reach of your PHP application while creating additional revenue for your Company! Parallels a worldwide leader in virtualization and automation software that optimizes computing across all major hardware, operating systems, and virtualization platforms has the ideal platform for your PHP Application.
DB2 Storage Engine for MySQL and Open Source Applications SessionZendCon
MySQL in i5/OS opens up new and interesting methods both for developing customized web-based applications that leverage i5/OS resources as well as deploying open community solutions.
OpenID and Information Cards are two of the most prominent emerging identity technologies. It is important that you understand the benefits, usage and differences between them in order prepare for the future, even when not ready to deploy them. During this presentation we will examine what digital identities are and specifically what each of these technologies is.
European Accessibility Act & Integrated Accessibility TestingJulia Undeutsch
Emma Dawson will guide you through two important topics in this session.
Firstly, she will prepare you for the European Accessibility Act (EAA), which comes into effect on 28 June 2025, and show you how development teams can prepare for it.
In the second part of the webinar, Emma Dawson will explore with you various integrated testing methods and tools that will help you improve accessibility during the development cycle, such as Linters, Storybook, Playwright, just to name a few.
Focus: European Accessibility Act, Integrated Testing tools and methods (e.g. Linters, Storybook, Playwright)
Target audience: Everyone, Developers, Testers
Contributing to WordPress With & Without Code.pptxPatrick Lumumba
Contributing to WordPress: Making an Impact on the Test Team—With or Without Coding Skills
WordPress survives on collaboration, and the Test Team plays a very important role in ensuring the CMS is stable, user-friendly, and accessible to everyone.
This talk aims to deconstruct the myth that one has to be a developer to contribute to WordPress. In this session, I will share with the audience how to get involved with the WordPress Team, whether a coder or not.
We’ll explore practical ways to contribute, from testing new features, and patches, to reporting bugs. By the end of this talk, the audience will have the tools and confidence to make a meaningful impact on WordPress—no matter the skill set.
Data Virtualization: Bringing the Power of FME to Any ApplicationSafe Software
Imagine building web applications or dashboards on top of all your systems. With FME’s new Data Virtualization feature, you can deliver the full CRUD (create, read, update, and delete) capabilities on top of all your data that exploit the full power of FME’s all data, any AI capabilities. Data Virtualization enables you to build OpenAPI compliant API endpoints using FME Form’s no-code development platform.
In this webinar, you’ll see how easy it is to turn complex data into real-time, usable REST API based services. We’ll walk through a real example of building a map-based app using FME’s Data Virtualization, and show you how to get started in your own environment – no dev team required.
What you’ll take away:
-How to build live applications and dashboards with federated data
-Ways to control what’s exposed: filter, transform, and secure responses
-How to scale access with caching, asynchronous web call support, with API endpoint level security.
-Where this fits in your stack: from web apps, to AI, to automation
Whether you’re building internal tools, public portals, or powering automation – this webinar is your starting point to real-time data delivery.
Introduction and Background:
Study Overview and Methodology: The study analyzes the IT market in Israel, covering over 160 markets and 760 companies/products/services. It includes vendor rankings, IT budgets, and trends from 2025-2029. Vendors participate in detailed briefings and surveys.
Vendor Listings: The presentation lists numerous vendors across various pages, detailing their names and services. These vendors are ranked based on their participation and market presence.
Market Insights and Trends: Key insights include IT market forecasts, economic factors affecting IT budgets, and the impact of AI on enterprise IT. The study highlights the importance of AI integration and the concept of creative destruction.
Agentic AI and Future Predictions: Agentic AI is expected to transform human-agent collaboration, with AI systems understanding context and orchestrating complex processes. Future predictions include AI's role in shopping and enterprise IT.
Agentic AI Explained: The Next Frontier of Autonomous Intelligence & Generati...Aaryan Kansari
Agentic AI Explained: The Next Frontier of Autonomous Intelligence & Generative AI
Discover Agentic AI, the revolutionary step beyond reactive generative AI. Learn how these autonomous systems can reason, plan, execute, and adapt to achieve human-defined goals, acting as digital co-workers. Explore its promise, key frameworks like LangChain and AutoGen, and the challenges in designing reliable and safe AI agents for future workflows.
Sticky Note Bullets:
Definition: Next stage beyond ChatGPT-like systems, offering true autonomy.
Core Function: Can "reason, plan, execute and adapt" independently.
Distinction: Proactive (sets own actions for goals) vs. Reactive (responds to prompts).
Promise: Acts as "digital co-workers," handling grunt work like research, drafting, bug fixing.
Industry Outlook: Seen as a game-changer; Deloitte predicts 50% of companies using GenAI will have agentic AI pilots by 2027.
Key Frameworks: LangChain, Microsoft's AutoGen, LangGraph, CrewAI.
Development Focus: Learning to think in workflows and goals, not just model outputs.
Challenges: Ensuring reliability, safety; agents can still hallucinate or go astray.
Best Practices: Start small, iterate, add memory, keep humans in the loop for final decisions.
Use Cases: Limited only by imagination (e.g., drafting business plans, complex simulations).
Adtran’s SDG 9000 Series brings high-performance, cloud-managed Wi-Fi 7 to homes, businesses and public spaces. Built on a unified SmartOS platform, the portfolio includes outdoor access points, ceiling-mount APs and a 10G PoE router. Intellifi and Mosaic One simplify deployment, deliver AI-driven insights and unlock powerful new revenue streams for service providers.
6th Power Grid Model Meetup
Join the Power Grid Model community for an exciting day of sharing experiences, learning from each other, planning, and collaborating.
This hybrid in-person/online event will include a full day agenda, with the opportunity to socialize afterwards for in-person attendees.
If you have a hackathon proposal, tell us when you register!
About Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
AI Emotional Actors: “When Machines Learn to Feel and Perform"AkashKumar809858
Welcome to the era of AI Emotional Actors.
The entertainment landscape is undergoing a seismic transformation. What started as motion capture and CGI enhancements has evolved into a full-blown revolution: synthetic beings not only perform but express, emote, and adapt in real time.
For reading further follow this link -
https://akash97.gumroad.com/l/meioex
Dev Dives: System-to-system integration with UiPath API WorkflowsUiPathCommunity
Join the next Dev Dives webinar on May 29 for a first contact with UiPath API Workflows, a powerful tool purpose-fit for API integration and data manipulation!
This session will guide you through the technical aspects of automating communication between applications, systems and data sources using API workflows.
📕 We'll delve into:
- How this feature delivers API integration as a first-party concept of the UiPath Platform.
- How to design, implement, and debug API workflows to integrate with your existing systems seamlessly and securely.
- How to optimize your API integrations with runtime built for speed and scalability.
This session is ideal for developers looking to solve API integration use cases with the power of the UiPath Platform.
👨🏫 Speakers:
Gunter De Souter, Sr. Director, Product Manager @UiPath
Ramsay Grove, Product Manager @UiPath
This session streamed live on May 29, 2025, 16:00 CET.
Check out all our upcoming UiPath Dev Dives sessions:
👉 https://community.uipath.com/dev-dives-automation-developer-2025/
Securiport is a border security systems provider with a progressive team approach to its task. The company acknowledges the importance of specialized skills in creating the latest in innovative security tech. The company has offices throughout the world to serve clients, and its employees speak more than twenty languages at the Washington D.C. headquarters alone.
Offshore IT Support: Balancing In-House and Offshore Help Desk Techniciansjohn823664
In today's always-on digital environment, businesses must deliver seamless IT support across time zones, devices, and departments. This SlideShare explores how companies can strategically combine in-house expertise with offshore talent to build a high-performing, cost-efficient help desk operation.
From the benefits and challenges of offshore support to practical models for integrating global teams, this presentation offers insights, real-world examples, and key metrics for success. Whether you're scaling a startup or optimizing enterprise support, discover how to balance cost, quality, and responsiveness with a hybrid IT support strategy.
Perfect for IT managers, operations leads, and business owners considering global help desk solutions.
UiPath Community Zurich: Release Management and Build PipelinesUiPathCommunity
Ensuring robust, reliable, and repeatable delivery processes is more critical than ever - it's a success factor for your automations and for automation programmes as a whole. In this session, we’ll dive into modern best practices for release management and explore how tools like the UiPathCLI can streamline your CI/CD pipelines. Whether you’re just starting with automation or scaling enterprise-grade deployments, our event promises to deliver helpful insights to you. This topic is relevant for both on-premise and cloud users - as well as for automation developers and software testers alike.
📕 Agenda:
- Best Practices for Release Management
- What it is and why it matters
- UiPath Build Pipelines Deep Dive
- Exploring CI/CD workflows, the UiPathCLI and showcasing scenarios for both on-premise and cloud
- Discussion, Q&A
👨🏫 Speakers
Roman Tobler, CEO@ Routinuum
Johans Brink, CTO@ MvR Digital Workforce
We look forward to bringing best practices and showcasing build pipelines to you - and to having interesting discussions on this important topic!
If you have any questions or inputs prior to the event, don't hesitate to reach out to us.
This event streamed live on May 27, 16:00 pm CET.
Check out all our upcoming UiPath Community sessions at:
👉 https://community.uipath.com/events/
Join UiPath Community Zurich chapter:
👉 https://community.uipath.com/zurich/
Droidal: AI Agents Revolutionizing HealthcareDroidal LLC
Droidal’s AI Agents are transforming healthcare by bringing intelligence, speed, and efficiency to key areas such as Revenue Cycle Management (RCM), clinical operations, and patient engagement. Built specifically for the needs of U.S. hospitals and clinics, Droidal's solutions are designed to improve outcomes and reduce administrative burden.
Through simple visuals and clear examples, the presentation explains how AI Agents can support medical coding, streamline claims processing, manage denials, ensure compliance, and enhance communication between providers and patients. By integrating seamlessly with existing systems, these agents act as digital coworkers that deliver faster reimbursements, reduce errors, and enable teams to focus more on patient care.
Droidal's AI technology is more than just automation — it's a shift toward intelligent healthcare operations that are scalable, secure, and cost-effective. The presentation also offers insights into future developments in AI-driven healthcare, including how continuous learning and agent autonomy will redefine daily workflows.
Whether you're a healthcare administrator, a tech leader, or a provider looking for smarter solutions, this presentation offers a compelling overview of how Droidal’s AI Agents can help your organization achieve operational excellence and better patient outcomes.
A free demo trial is available for those interested in experiencing Droidal’s AI Agents firsthand. Our team will walk you through a live demo tailored to your specific workflows, helping you understand the immediate value and long-term impact of adopting AI in your healthcare environment.
To request a free trial or learn more:
https://droidal.com/
Nix(OS) for Python Developers - PyCon 25 (Bologna, Italia)Peter Bittner
How do you onboard new colleagues in 2025? How long does it take? Would you love a standardized setup under version control that everyone can customize for themselves? A stable desktop setup, reinstalled in just minutes. It can be done.
This talk was given in Italian, 29 May 2025, at PyCon 25, Bologna, Italy. All slides are provided in English.
Original slides at https://slides.com/bittner/pycon25-nixos-for-python-developers
nnual (33 years) study of the Israeli Enterprise / public IT market. Covering sections on Israeli Economy, IT trends 2026-28, several surveys (AI, CDOs, OCIO, CTO, staffing cyber, operations and infra) plus rankings of 760 vendors on 160 markets (market sizes and trends) and comparison of products according to support and market penetration.