This document provides an overview of PHP syntax, variables, data types, operators, and other basic concepts. PHP scripts begin with <?php and end with ?>, variables start with $ and have naming rules, and there are different data types including string, integer, float, boolean, array, object and NULL. Operators allow performing actions on variables like arithmetic, comparison, increment/decrement, logical, string and array operations.
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.
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.
Variables are containers that store information in PHP. PHP variables are case sensitive and can contain strings, integers, floats, Booleans, arrays and objects. Variables start with a $ sign followed by a name. Variable names must begin with a letter or underscore and can contain alphanumeric characters and underscores. Variables can be assigned values using common operators like assignment, addition, subtraction etc. Variables can have different scopes like local, global and static. Constants are similar to variables but their values cannot be changed once defined.
The document provides an introduction to PHP by discussing what PHP is, the basic syntax, variables, data types, operators, and control structures in PHP. PHP is a server-side scripting language used for web development that allows embedding scripts into HTML. The basic syntax uses <?php ?> tags to escape HTML. PHP supports variables, arrays, and basic data types like integers, floats, strings, booleans, and NULL. Operators include arithmetic, assignment, comparison, and logical operators. Control structures include if/else statements, while loops, for loops, and switch statements.
This document provides an overview of PHP and MySQL. It discusses key PHP elements like variables, arrays, conditional statements, and loops. It also covers PHP statements, naming variables, outputting values, performing calculations, working with arrays, conditional logic, and loops. The document then discusses connecting to and querying MySQL databases, and how to insert, update, delete data. It also covers building forms, getting form input, and basic file input/output in PHP.
PHP is a server-side scripting language used for web development. It allows developers to write scripts that can create dynamic web page content. Some key uses of PHP include server-side scripting, command line scripting, and writing desktop applications. The document discusses various PHP concepts like data types, variables, constants, expressions, and operators. It provides examples to illustrate PHP syntax and how different PHP elements work.
This document provides an overview of PHP (Hypertext Preprocessor) including its introduction, syntax, variables, data types, operators, control flow statements and functions. PHP is a widely used open source scripting language that allows developers to execute code server-side to generate dynamic web page content. Some key points covered include:
- PHP code is placed within <?php ?> tags in HTML documents and executed on the server.
- It supports common data types like strings, integers, arrays and objects that can be stored and manipulated using variables and operators.
- Control structures allow conditional execution and loops like if/else, switch, while, do/while and for to control program flow.
- Functions
Here are the JavaScript source codes for the given problems:
COMPARISON
<script>
var x = 50;
var y = 68;
var z = (x < y);
alert(z);
</script>
LOGICAL
<script>
var x = 50;
var y = 68;
var z = (x == y && y == x);
alert(z);
</script>
CONDITIONAL
<script>
var answer = prompt("What is the first calculating device? Abacus or Comptometer?", "");
var result = (answer == "Abacus") ? "Congratulation!" : "Try Again";
alert(
- PHP is a scripting language used to create dynamic web pages. A PHP scripting block starts with <?php and ends with ?>. PHP code can be embedded within HTML.
- Variables in PHP start with a $ sign and do not require explicit declaration of data types. PHP is a loosely typed language.
- Conditional statements like if/elseif/else and switch can be used to control program flow based on conditions.
The document provides an introduction to PHP including PHP tags, comments, data types, variables, control structures, functions and more. It explains that PHP code is placed between <?php ?> tags and describes the different tags like <?php ?> for PHP code, <!-- --> for HTML comments. It also summarizes key PHP concepts like variables, arrays, strings, operators, if/else statements, loops, functions and built-in PHP functions.
This document provides an introduction to the PHP programming language. It discusses PHP's syntax which is inspired by C with curly braces and semicolons, and Perl with dollar signs for variables and associative arrays. PHP code can be embedded within HTML files to dynamically output content. The document also covers PHP variables, data types, expressions, operators, control structures like if/else statements, and functions like echo to output values.
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.
This document discusses various PHP looping structures including for, while, do-while, foreach loops as well as break and continue statements. It provides examples of using each loop type to iterate through arrays and print output. Key looping constructs covered are for loops to iterate a set number of times, while loops to execute code while a condition remains true, do-while loops which execute code once then check the condition, and foreach loops used specifically to iterate over arrays.
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 provides an overview of PHP (Hypertext Preprocessor), a popular server-side scripting language used for web development. It discusses key PHP concepts like server-side scripting, inclusion of files, syntax, variables, arrays, operators, functions, branching, looping, forms, MySQL integration, sessions, and cookies. The document is intended to help beginners get started with PHP.
PHP is a server-side scripting language that was created by Rasmus Lerdoff in 1994 and released in 1998. Major versions include PHP 3 in 1998, PHP 4 in 2000 which improved speed and reliability, and PHP 5 in 2004 which added improved object-oriented programming support. The latest version is PHP 7.4 released in 2019. PHP is an open source language that is widely used for web development due to its ease of use, flexibility, and built-in support for connecting to databases. It allows placing PHP code into HTML files which is then executed on the server and plain HTML is sent to browsers.
PHP is a scripting language commonly used for web development. It has syntax inspired by C and Perl and allows embedding PHP code segments within HTML files. PHP code is interpreted and executed on the server side to generate dynamic web page content. Key PHP constructs include variables, data types, operators, conditional and looping control structures, and functions. PHP aims to be convenient for programmers while sometimes failing silently on errors.
PHP is a server-side scripting language used to build dynamic websites. It supports integration with many databases including MySQL. PHP files contain text, HTML tags, and PHP scripts. MySQL is a database server that is ideal for both small and large applications. PHP and MySQL are commonly used together, as PHP can connect to and manipulate MySQL databases. This allows developers to build database-driven websites and applications.
The document provides an introduction to the PHP programming language. It discusses PHP's syntax, which is inspired by C with curly braces and semicolons, and Perl with dollar signs for variables. PHP code can be embedded within HTML files. The philosophy of PHP is that it aims to be convenient for programmers. Basic PHP syntax and keywords are also covered, along with variables, strings, expressions, output, comments, and control structures like if/else statements and while loops.
The document provides an introduction to PHP including what PHP is, the basic syntax, variable types, operators, control structures like if/else and loops, and functions. PHP is a server-side scripting language used for web development that is embedded into HTML. It requires a web server with PHP enabled and uses <?php ?> tags. The document outlines the basic building blocks of PHP like variables, data types, operators, and control flow structures.
To define responsive web design means that your website (and its pages) can adapt and deliver the best experience to users, whether they’re on their desktop, laptop, tablet, or smartphone. For that to happen, though, your website needs a responsive design.
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The document provides an introduction to PHP by discussing what PHP is, the basic syntax, variables, data types, operators, and control structures in PHP. PHP is a server-side scripting language used for web development that allows embedding scripts into HTML. The basic syntax uses <?php ?> tags to escape HTML. PHP supports variables, arrays, and basic data types like integers, floats, strings, booleans, and NULL. Operators include arithmetic, assignment, comparison, and logical operators. Control structures include if/else statements, while loops, for loops, and switch statements.
This document provides an overview of PHP and MySQL. It discusses key PHP elements like variables, arrays, conditional statements, and loops. It also covers PHP statements, naming variables, outputting values, performing calculations, working with arrays, conditional logic, and loops. The document then discusses connecting to and querying MySQL databases, and how to insert, update, delete data. It also covers building forms, getting form input, and basic file input/output in PHP.
PHP is a server-side scripting language used for web development. It allows developers to write scripts that can create dynamic web page content. Some key uses of PHP include server-side scripting, command line scripting, and writing desktop applications. The document discusses various PHP concepts like data types, variables, constants, expressions, and operators. It provides examples to illustrate PHP syntax and how different PHP elements work.
This document provides an overview of PHP (Hypertext Preprocessor) including its introduction, syntax, variables, data types, operators, control flow statements and functions. PHP is a widely used open source scripting language that allows developers to execute code server-side to generate dynamic web page content. Some key points covered include:
- PHP code is placed within <?php ?> tags in HTML documents and executed on the server.
- It supports common data types like strings, integers, arrays and objects that can be stored and manipulated using variables and operators.
- Control structures allow conditional execution and loops like if/else, switch, while, do/while and for to control program flow.
- Functions
Here are the JavaScript source codes for the given problems:
COMPARISON
<script>
var x = 50;
var y = 68;
var z = (x < y);
alert(z);
</script>
LOGICAL
<script>
var x = 50;
var y = 68;
var z = (x == y && y == x);
alert(z);
</script>
CONDITIONAL
<script>
var answer = prompt("What is the first calculating device? Abacus or Comptometer?", "");
var result = (answer == "Abacus") ? "Congratulation!" : "Try Again";
alert(
- PHP is a scripting language used to create dynamic web pages. A PHP scripting block starts with <?php and ends with ?>. PHP code can be embedded within HTML.
- Variables in PHP start with a $ sign and do not require explicit declaration of data types. PHP is a loosely typed language.
- Conditional statements like if/elseif/else and switch can be used to control program flow based on conditions.
The document provides an introduction to PHP including PHP tags, comments, data types, variables, control structures, functions and more. It explains that PHP code is placed between <?php ?> tags and describes the different tags like <?php ?> for PHP code, <!-- --> for HTML comments. It also summarizes key PHP concepts like variables, arrays, strings, operators, if/else statements, loops, functions and built-in PHP functions.
This document provides an introduction to the PHP programming language. It discusses PHP's syntax which is inspired by C with curly braces and semicolons, and Perl with dollar signs for variables and associative arrays. PHP code can be embedded within HTML files to dynamically output content. The document also covers PHP variables, data types, expressions, operators, control structures like if/else statements, and functions like echo to output values.
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.
This document discusses various PHP looping structures including for, while, do-while, foreach loops as well as break and continue statements. It provides examples of using each loop type to iterate through arrays and print output. Key looping constructs covered are for loops to iterate a set number of times, while loops to execute code while a condition remains true, do-while loops which execute code once then check the condition, and foreach loops used specifically to iterate over arrays.
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 provides an overview of PHP (Hypertext Preprocessor), a popular server-side scripting language used for web development. It discusses key PHP concepts like server-side scripting, inclusion of files, syntax, variables, arrays, operators, functions, branching, looping, forms, MySQL integration, sessions, and cookies. The document is intended to help beginners get started with PHP.
PHP is a server-side scripting language that was created by Rasmus Lerdoff in 1994 and released in 1998. Major versions include PHP 3 in 1998, PHP 4 in 2000 which improved speed and reliability, and PHP 5 in 2004 which added improved object-oriented programming support. The latest version is PHP 7.4 released in 2019. PHP is an open source language that is widely used for web development due to its ease of use, flexibility, and built-in support for connecting to databases. It allows placing PHP code into HTML files which is then executed on the server and plain HTML is sent to browsers.
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PHP is a server-side scripting language used to build dynamic websites. It supports integration with many databases including MySQL. PHP files contain text, HTML tags, and PHP scripts. MySQL is a database server that is ideal for both small and large applications. PHP and MySQL are commonly used together, as PHP can connect to and manipulate MySQL databases. This allows developers to build database-driven websites and applications.
The document provides an introduction to the PHP programming language. It discusses PHP's syntax, which is inspired by C with curly braces and semicolons, and Perl with dollar signs for variables. PHP code can be embedded within HTML files. The philosophy of PHP is that it aims to be convenient for programmers. Basic PHP syntax and keywords are also covered, along with variables, strings, expressions, output, comments, and control structures like if/else statements and while loops.
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studying the existing or obsolete system and software,
conducting interviews of users and developers,
referring to the database or
collecting answers from the questionnaires.
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2. PHP DETERMINES THE DATA TYPE DEPENDING ON THE
ATTRIBUTES OF THE SUPPLIED DATA.
<?php
$my_var = 1;
echo $my_var;
?>
<?php
$my_var = 3.14;
echo $my_var;
?>
<?php
$my_var ="Hypertext Pre Processor";
echo $my_var;
?>
3. PHP ALSO ALLOWS YOU TO CAST THE DATA TYPE.
THIS IS KNOWN AS EXPLICIT CASTING.
<?php
$a = 1;
$b = 1.5;
$c = $a + $b;
$c = $a + (int) $b;
echo $c;
?>
4. Operator Name Description Example Output
+ Addition
Summation of x
and y
1 + 1; 2
– Subtraction
Difference
between x and y
1 – 1; 0
* Multiplication Multiplies x and y 3 * 7; 21
/ Division
Quotient of x and
y
45 / 5; 9
% PHP Modulus
Gives remainder of
dividing x and y
10 % 3; 1
-n Negation
Turns n into a
negative number
-(-5); 5
x . y Concatenation
Puts together x and
y
“PHP” . ”
ROCKS”;10 . 3;
PHP ROCKS103
5. Operator Name Description Example Output
x = ? assignment
Assigns the value
of x to ?
$x = 5; 5
x += ? addition
Increments the
value of x by ?
$x = 2;$x += 1; 3
X -= ? subtraction
Subtracts ? from
the value of x
$x = 3;$x -= 2; 1
X *=? multiplication
Multiplies the
value of x ? times
$x = 0;$x *=9; 0
X /=? division Quotient of x and ? $x = 6;$x /=3; 2
X %=? modulus
The reminder of
dividing x by?
$x = 3;$x %= 2; 1
X .=? concatenate Puts together items
” $x = ‘Pretty’;
$x .= ‘ Cool!’;”
Pretty Cool!
6. perator Name Description Example Output
X == y Equal
Compares x and y then
returns true if they are
equal
1 == “1”; True or 1
X === y identical
Compares both values
and data types.
1 === “1”;
False or 0. Since 1 is
integer and “1” is string
X != y, x <> y PHP Not equal
Compares values of x
and y. returns true if the
values are not equal
2 != 1; True or 1
X > y Greater than
Compares values of x
and y. returns true if x is
greater than y
3 > 1; True or 1
X < y Less than
Compares values of x
and y. returns true if x is
less than y
2 < 1; False or 0
X >= y Greater than or equal
Compares values of x
and y. returns true if x is
greater than or equal to
y
1 >=1 True or 1
X <= y Less than or equal
Compares values of x
and y. returns true if x is
greater than or equal to
y
8 <= 6 False or 0
7. Operator Name Description Example Output
X and y, x && y And
Returns true if both x
and y are equal
1 and 4;True&& False; True or 1False or 0
X or y, x || y Or
Returns true if either
x or y is true
6 or 9;0 || 0; True or 1False or 0
X xor y Exclusive or, xor
Returns true if only x
is true or only y is
true
1 xor 1;1 xor 0; False or 0True or 1
!x Not
Returns true if x is
false and false if x is
true
!0; True or 1
8. <?php
$globalVar = "I am global";
function testScope() {
global $globalVar;
echo $globalVar . "n";
}
testScope();
?>
9. <?php
// Student information
$studentName = "Alice"; // String
$marks = [85, 78, 92, 88, 76]; // Array of integers
$passingMarks = 50; // Integer
$totalSubjects = count($marks); // Integer
// Calculate total and average marks
$totalMarks = array_sum($marks); // Integer
$averageMarks = $totalMarks / $totalSubjects; // Float
// Check if the student passed all subjects
$hasPassedAllSubjects = true; // Boolean
foreach ($marks as $mark) {
if ($mark < $passingMarks) {
$hasPassedAllSubjects = false;
break;
}
}
// Display results
echo "Student Name: $studentNamen";
echo "Total Marks: $totalMarksn";
echo "Average Marks: " . number_format($averageMarks, 2) . "n";
// Determine and display pass/fail status
if ($hasPassedAllSubjects) {
echo "Status: Passedn";
} else {
echo "Status: Failedn";
}
// Display detailed results
echo "nSubject-wise Marks:n";
foreach ($marks as $index => $mark) {
echo "Subject " . ($index + 1) . ": $markn";
}
?>
![<?php
// Student information
$studentName = "Alice"; // String
$marks = [85, 78, 92, 88, 76]; // Array of integers
$passingMarks = 50; // Integer
$totalSubjects = count($marks); // Integer
// Calculate total and average marks
$totalMarks = array_sum($marks); // Integer
$averageMarks = $totalMarks / $totalSubjects; // Float
// Check if the student passed all subjects
$hasPassedAllSubjects = true; // Boolean
foreach ($marks as $mark) {
if ($mark < $passingMarks) {
$hasPassedAllSubjects = false;
break;
}
}
// Display results
echo "Student Name: $studentNamen";
echo "Total Marks: $totalMarksn";
echo "Average Marks: " . number_format($averageMarks, 2) . "n";
// Determine and display pass/fail status
if ($hasPassedAllSubjects) {
echo "Status: Passedn";
} else {
echo "Status: Failedn";
}
// Display detailed results
echo "nSubject-wise Marks:n";
foreach ($marks as $index => $mark) {
echo "Subject " . ($index + 1) . ": $markn";
}
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