note 95222 added to function.exec

I had many problems with exec() in a program, rendering very large images and using some external tools via exec in a very performance and resources consuming process. Sometimes the program failed with "Warning: exec(): Unable to fork". In my case it definitely did not have to do with some process number limit to be set in /etc/security/limits.conf, as described in http://bugs.php.net/bug.php?id=18833&edit=3. Furthermore following workaround now does it very well: <?php function user_proc_exec ($command,& $result,& $status) { $process = proc_open( $command, array( 0 => array("pipe", "r"), //STDIN 1 => array("pipe", "w"), //STDOUT 2 => array("pipe","w")), //STDERR $pipes ); $result = stream_get_contents($pipes[1]); $error = stream_get_contents($pipes[2]); fclose($pipes[1]); fclose($pipes[2]); $status= proc_close($process); return($error); } ?> In most cases, exec() could simply be replaced by user_proc_exec(). However be aware, that user_proc_exec() does not return the last line of output as string, but the error message! ---- Server IP: 212.124.37.9 Probable Submitter: 91.22.167.1 ---- Manual Page -- http://www.php.net/manual/en/function.exec.php Edit -- https://master.php.net/note/edit/95222 Del: integrated -- https://master.php.net/note/delete/95222/integrated Del: useless -- https://master.php.net/note/delete/95222/useless Del: bad code -- https://master.php.net/note/delete/95222/bad+code Del: spam -- https://master.php.net/note/delete/95222/spam Del: non-english -- https://master.php.net/note/delete/95222/non-english Del: in docs -- https://master.php.net/note/delete/95222/in+docs Del: other reasons-- https://master.php.net/note/delete/95222 Reject -- https://master.php.net/note/reject/95222 Search -- https://master.php.net/manage/user-notes.php