#43077 [Opn->Fbk]: curl_multi_exec does not report errors

[jani]

 ID:               43077
 Updated by:       [EMAIL PROTECTED]
 Reported By:      robert dot reichel at boboton dot com
-Status:           Open
+Status:           Feedback
 Bug Type:         cURL related
 Operating System: Windows XP
 PHP Version:      5.2.4
 New Comment:

You should be using curl_multi_info_read() instead:
http://php.net/curl_multi_info_read



Previous Comments:
------------------------------------------------------------------------

[2007-10-23 08:08:53] robert dot reichel at boboton dot com

Description:
------------
curl_error does not produce error message when used with
curl_multi_exec. The results are not same each time you execute provided
code.

Reproduce code:
---------------
<?php

        function fetchData($URLs)
        {
                //      set empty lists
                $errors = array();
                $cache  = array();
        
                //create the multiple cURL handle
                $mh = curl_multi_init();
                
                foreach($URLs as $i=>$URL)
                {
                        //      initialize a cURL session
                        $sessions[$i] = curl_init();
                
                        // set URL and other appropriate options
                        curl_setopt($sessions[$i], CURLOPT_URL, $URL);
                        curl_setopt($sessions[$i], CURLOPT_HEADER, 0);
                        curl_setopt($sessions[$i], CURLOPT_RETURNTRANSFER, 1); 

                        //add handles
                        curl_multi_add_handle($mh, $sessions[$i]);
                }
                //execute the handles
                do {
                        curl_multi_exec($mh, $running);
                } while ($running > 0);
        
                foreach($sessions as $i=>$session)
                {
                        //      get file content
                        if (curl_multi_getcontent($session) == false) {
                                $errors[$i] = curl_error($session);
                        }
                        //      remove handle
                        curl_multi_remove_handle($mh, $sessions[$i]);
                }
                //      close multi handle
                curl_multi_close($mh);
                
                return $errors;
        }
        /*--- CASE 'A' ---*/
        
        //      valid URLs
        $URLsA[] = 'http://www.google.com/';
        $URLsA[] = 'http://www.yahoo.com/';
        //      Invalid URL. This site does not exist. This should produce an 
error
message.
        $URLsA[] = 'http://www.mysite-abc123.com/';
        
        $errorsA = fetchData($URLsA);
        print_r($errorsA);

        /*--- CASE 'B' ---*/
        
        //      valid URL
        $URLsB[] = 'http://www.google.com/';
        //      Invalid URL. This site does not exist. This should produce an 
error
message,
        $URLsB[] = 'http://www.mysite-abc123.com/';
        //      valid URL
        $URLsB[] = 'http://www.yahoo.com/';
        
        $errorsB = fetchData($URLsB);
        print_r($errorsB);
        
?>

Expected result:
----------------
Array
{
  [2] => Couldn't resolve host 'www.mysite-abc123.com'
}
Array
{
  [1] => Couldn't resolve host 'www.mysite-abc123.com'
}

Actual result:
--------------
The result is not always same. In most cases it's like this:
Array
{
  [2] =>
Array
{
  [1] =>
}
In rare cases it's like this:
Array
{
  [2] =>
}
Array
{
  [1] => Couldn't resolve host 'www.mysite-abc123.com'
}


------------------------------------------------------------------------


-- 
Edit this bug report at http://bugs.php.net/?id=43077&edit=1