From: cyberline
Operating system: Irrelevant
PHP version: 5.6.12
Package: cURL related
Bug Type: Bug
Bug description:Multicurl runs forever with PHP >= 5.6
Description:
------------
If you use multicurl simmilar to the sample mentioned here:
http://php.net/manual/en/function.curl-multi-init.php
your code will run forever or reach max_execution_time.
Test script:
---------------
<?php
// create both cURL resources
$ch1 = curl_init();
$ch2 = curl_init();
// set URL and other appropriate options
curl_setopt($ch1, CURLOPT_URL, "http://lxr.php.net/");
curl_setopt($ch1, CURLOPT_HEADER, 0);
curl_setopt($ch2, CURLOPT_URL, "http://www.php.net/");
curl_setopt($ch2, CURLOPT_HEADER, 0);
//create the multiple cURL handle
$mh = curl_multi_init();
//add the two handles
curl_multi_add_handle($mh,$ch1);
curl_multi_add_handle($mh,$ch2);
$active = null;
//execute the handles
do {
$mrc = curl_multi_exec($mh, $active);
} while ($mrc == CURLM_CALL_MULTI_PERFORM);
while ($active && $mrc == CURLM_OK) {
if (curl_multi_select($mh) != -1) {
do {
$mrc = curl_multi_exec($mh, $active);
} while ($mrc == CURLM_CALL_MULTI_PERFORM);
}
}
//close the handles
curl_multi_remove_handle($mh, $ch1);
curl_multi_remove_handle($mh, $ch2);
curl_multi_close($mh);
Expected result:
----------------
HTML of both URL's
Actual result:
--------------
Nothing happens.
strace output shows endless:
select(5, [], [4], [], {1, 0}) = 1 (out [4], left {0, 999999})
select(5, [], [4], [], {1, 0}) = 1 (out [4], left {0, 999999})
select(5, [], [4], [], {1, 0}) = 1 (out [4], left {0, 999999})
select(5, [], [4], [], {1, 0}) = 1 (out [4], left {0, 999999})
select(5, [], [4], [], {1, 0}) = 1 (out [4], left {0, 999999})
select(5, [], [4], [], {1, 0}) = 1 (out [4], left {0, 999999})
select(5, [], [4], [], {1, 0}) = 1 (out [4], left {0, 999999})
select(5, [], [4], [], {1, 0}) = 1 (out [4], left {0, 999999})
select(5, [], [4], [], {1, 0}) = 1 (out [4], left {0, 999999})
select(5, [], [4], [], {1, 0}) = 1 (out [4], left {0, 999999})
select(5, [], [4], [], {1, 0}) = 1 (out [4], left {0, 999999})
--
Edit bug report at https://bugs.php.net/bug.php?id=70425&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=70425&r=trysnapshot54
Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=70425&r=trysnapshot55
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=70425&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=70425&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=70425&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=70425&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=70425&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=70425&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=70425&r=support
Expected behavior: https://bugs.php.net/fix.php?id=70425&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=70425&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=70425&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=70425&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=70425&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=70425&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=70425&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=70425&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=70425&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=70425&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=70425&r=mysqlcfg