note 23228 added to function.popen

Here is a workaround for not having bidirectional pipes in php. If you have bidirectional pipe support, don't bother with this. The trick here is to send the input on the command line to the target application. In particular I wanted to use openssl without using temp files or named pipes. This solution should also be thread/process safe. This does work on Linux (RedHat 7). function filterThroughCmd($input, $commandLine) { $pipe = popen("echo \"$input\"|$commandLine" , 'r'); if (!$pipe) { print "pipe failed."; return ""; } $output = ''; while(!feof($pipe)) { $output .= fread($pipe, 1024); } pclose($pipe); return $output; } # example: print filterThroughCmd("hello", "cat"); # Piping to cat has the effect of echoing your input. -- http://www.php.net/manual/en/function.popen.php http://master.php.net/manage/user-notes.php?action=edit+23228 http://master.php.net/manage/user-notes.php?action=delete+23228 http://master.php.net/manage/user-notes.php?action=reject+23228