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    Примечания пользователей 10 notes

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    32
    frank at interactinet dot com
    14 years ago
    I wrote the following to see if a submitted URL has a valid http response code and also if it responds quickly.

    Use the code like this:

    <?php
    $is_ok     = http_response($url); // returns true only if http response code < 400
    ?>

    The second argument is optional, and it allows you to check for a specific response code

    <?php
    http_response    ($url,'400'); // returns true if http status is 400
    ?>

    The third allows you to specify how long you are willing to wait for a response.

    <?php
    http_response    ($url,'200',3); // returns true if the response takes less than 3 seconds and the response code is 200
    ?>

    <?php
    function http_response($url, $status = null, $wait = 3)
    {
    $time = microtime(true);
    $expire = $time + $wait;

    // we fork the process so we don't have to wait for a timeout
    $pid = pcntl_fork();
    if (    $pid == -1) {
    die(    'could not fork');
    } else if (    $pid) {
    // we are the parent
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HEADER, TRUE);
    curl_setopt($ch, CURLOPT_NOBODY, TRUE); // remove body
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    $head = curl_exec($ch);
    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);

    if(!    $head)
    {
    return     FALSE;
    }

    if(    $status === null)
    {
    if(    $httpCode < 400)
    {
    return     TRUE;
    }
    else
    {
    return     FALSE;
    }
    }
    elseif(    $status == $httpCode)
    {
    return     TRUE;
    }

    return     FALSE;
    pcntl_wait($status); //Protect against Zombie children
    } else {
    // we are the child
    while(microtime(true) < $expire)
    {
    sleep(0.5);
    }
    return     FALSE;
    }
    }
    ?>

    Hope this example helps. It is not 100% tested, so any feedback [sent directly to me by email] is appreciated.
    up
    14
    artax_N_O_S_P_A_M_erxes2 at iname dot com
    14 years ago
    I needed to use cURL in a php script to download data using not only SSL for the server authentication but also for client authentication.
    On a default install of Fedora, setting up the proper cURL parameters, I would get an error:

    $ php curl.php
    Peer certificate cannot be authenticated with known CA certificates

    The data on http://curl.haxx.se/docs/sslcerts.html was most useful. Indeed, toward to bottom it tells you to add a missing link inside /etc/pki/nssdb to use the ca-bundle.crt file. You do it so:

    # cd /etc/pki/nssdb
    # ln -s /usr/lib64/libnssckbi.so libnssckbi.so

    Now you can do client authentication, provided you have your certificate handy with:

    <?php
    $data     = "<soap:Envelope>[...]</soap:Envelope>";
    $tuCurl = curl_init();
    curl_setopt($tuCurl, CURLOPT_URL, "https://example.com/path/for/soap/url/");
    curl_setopt($tuCurl, CURLOPT_PORT , 443);
    curl_setopt($tuCurl, CURLOPT_VERBOSE, 0);
    curl_setopt($tuCurl, CURLOPT_HEADER, 0);
    curl_setopt($tuCurl, CURLOPT_SSLVERSION, 3);
    curl_setopt($tuCurl, CURLOPT_SSLCERT, getcwd() . "/client.pem");
    curl_setopt($tuCurl, CURLOPT_SSLKEY, getcwd() . "/keyout.pem");
    curl_setopt($tuCurl, CURLOPT_CAINFO, getcwd() . "/ca.pem");
    curl_setopt($tuCurl, CURLOPT_POST, 1);
    curl_setopt($tuCurl, CURLOPT_SSL_VERIFYPEER, 1);
    curl_setopt($tuCurl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($tuCurl, CURLOPT_POSTFIELDS, $data);
    curl_setopt($tuCurl, CURLOPT_HTTPHEADER, array("Content-Type: text/xml","SOAPAction: \"/soap/action/query\"", "Content-length: ".strlen($data)));

    $tuData = curl_exec($tuCurl);
    if(!    curl_errno($tuCurl)){
    $info = curl_getinfo($tuCurl);
    echo     'Took ' . $info['total_time'] . ' seconds to send a request to ' . $info['url'];
    } else {
    echo     'Curl error: ' . curl_error($tuCurl);
    }

    curl_close($tuCurl);
    echo     $tuData;
    ?>
    up
    12
    gmail@asmqb7
    9 years ago
    WARNING WARNING

    In this example: http://php.net/manual/en/book.curl.php#102885 by "frank at interactinet dot com"

    There's a small bug in

    <?php

    ...

    elseif(    $status == $httpCode)
    {
    return     TRUE;
    }

    return     FALSE;
    pcntl_wait($status); //Protect against Zombie children
    } else {
    // we are the child
    while(microtime(true) < $expire)

    ...

    ?>

    The code will immediately leave the function at the `return`, and pcntl_wait() will NEVER be executed, under any circumstances.

    I can't see any other issues with this function however.
    up
    11
    artem at zabsoft dot co dot in
    16 years ago
    Hey I modified script for php 5. Also I add support server auth. and fixed some little bugs on the script.

    [EDIT BY danbrown AT php DOT net: Original was written by (unlcuky13 AT gmail DOT com) on 19-APR-09. The following note was included:
    Below is the my way of using through PHP 5 objecte oriented encapsulation to make thing easier.]

    <?php
    class mycurl {
    protected     $_useragent = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1';
    protected     $_url;
    protected     $_followlocation;
    protected     $_timeout;
    protected     $_maxRedirects;
    protected     $_cookieFileLocation = './cookie.txt';
    protected     $_post;
    protected     $_postFields;
    protected     $_referer ="http://www.google.com";

    protected     $_session;
    protected     $_webpage;
    protected     $_includeHeader;
    protected     $_noBody;
    protected     $_status;
    protected     $_binaryTransfer;
    public     $authentication = 0;
    public     $auth_name = '';
    public     $auth_pass = '';

    public function     useAuth($use){
    $this->authentication = 0;
    if(    $use == true) $this->authentication = 1;
    }

    public function     setName($name){
    $this->auth_name = $name;
    }
    public function     setPass($pass){
    $this->auth_pass = $pass;
    }

    public function     __construct($url,$followlocation = true,$timeOut = 30,$maxRedirecs = 4,$binaryTransfer = false,$includeHeader = false,$noBody = false)
    {
    $this->_url = $url;
    $this->_followlocation = $followlocation;
    $this->_timeout = $timeOut;
    $this->_maxRedirects = $maxRedirecs;
    $this->_noBody = $noBody;
    $this->_includeHeader = $includeHeader;
    $this->_binaryTransfer = $binaryTransfer;

    $this->_cookieFileLocation = dirname(__FILE__).'/cookie.txt';

    }

    public function     setReferer($referer){
    $this->_referer = $referer;
    }

    public function     setCookiFileLocation($path)
    {
    $this->_cookieFileLocation = $path;
    }

    public function     setPost ($postFields)
    {
    $this->_post = true;
    $this->_postFields = $postFields;
    }

    public function     setUserAgent($userAgent)
    {
    $this->_useragent = $userAgent;
    }

    public function     createCurl($url = 'nul')
    {
    if(    $url != 'nul'){
    $this->_url = $url;
    }

    $s = curl_init();

    curl_setopt($s,CURLOPT_URL,$this->_url);
    curl_setopt($s,CURLOPT_HTTPHEADER,array('Expect:'));
    curl_setopt($s,CURLOPT_TIMEOUT,$this->_timeout);
    curl_setopt($s,CURLOPT_MAXREDIRS,$this->_maxRedirects);
    curl_setopt($s,CURLOPT_RETURNTRANSFER,true);
    curl_setopt($s,CURLOPT_FOLLOWLOCATION,$this->_followlocation);
    curl_setopt($s,CURLOPT_COOKIEJAR,$this->_cookieFileLocation);
    curl_setopt($s,CURLOPT_COOKIEFILE,$this->_cookieFileLocation);

    if(    $this->authentication == 1){
    curl_setopt($s, CURLOPT_USERPWD, $this->auth_name.':'.$this->auth_pass