3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo syscall("ls -lathr"); function syscall($command){ $result = ""; if ($proc = popen("($command)2>&1","r")){ while (!feof($proc)) $result .= fgets($proc, 1000); pclose($proc); return $result; } } ?>
Output for 5.6.28, 7.0.14 - 7.1.0
Output for 4.3.2 - 5.6.25, 7.0.0 - 7.0.10
Warning: popen((ls -lathr)2>&1,r): Resource temporarily unavailable in /in/1spdi on line 7
Output for 4.3.0 - 4.3.1
Warning: popen((ls -lathr)2>&1,r) [http://www.php.net/function.popen]: Resource temporarily unavailable in /in/1spdi on line 7