Bug #74563 [NEW]: curl_exec() throws internal error in curl_error()

From: jeremys at ha dot com Operating system: RHEL 7.3 PHP version: 7.1.4 Package: cURL related Bug Type: Bug Bug description:curl_exec() throws internal error in curl_error() Description: ------------ Executing curl_exec() with a host/URL that refuses the connection makes curl_exec() sometimes raise an E_WARNING because curl_exec() calls curl_error() internally. The error is as follows: curl_error() expects parameter 1 to be resource, boolean given As you can see in the sample script, there is no explicit call to curl_error(), yet the above error is seen. I've only been able to reproduce via Apache, not via cli. Apache/2.4.6 (Red Hat Enterprise Linux) PHP 7.1.3 (part of Zend Server 9.1) - I assume 7.1.4 as well since there are no relevant changes to the curl interface in the PHP source code libcurl 7.29.0 Test script: --------------- <?php ini_set( 'display_errors', 1 ); ini_set( 'error_reporting', E_ALL ); set_error_handler( function ( ...$error ) { array_pop( $error ); print_r( $error ); die(); }); $resource = curl_init(); curl_setopt( $resource, CURLOPT_URL, 'http://127.0.0.1:1' ); curl_setopt( $resource, CURLOPT_RETURNTRANSFER, 1 ); curl_exec( $resource ); echo 'Script finished.'; Expected result: ---------------- Script finished. Actual result: -------------- Array ( [0] => 2 [1] => curl_error() expects parameter 1 to be resource, boolean given [2] => /usr/local/apache/htdocs2/curl-error-test.php [3] => 16 ) -- Edit bug report at https://bugs.php.net/bug.php?id=74563&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=74563&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=74563&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=74563&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=74563&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=74563&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=74563&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=74563&r=needscript Try newer version: https://bugs.php.net/fix.php?id=74563&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=74563&r=support Expected behavior: https://bugs.php.net/fix.php?id=74563&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=74563&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=74563&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=74563&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=74563&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=74563&r=dst IIS Stability: https://bugs.php.net/fix.php?id=74563&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=74563&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=74563&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=74563&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=74563&r=mysqlcfg