3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $_POST = ['key' => 'value']; foreach ($_POST as $var => $value) { if (isset($$var)) continue; $$key = $value; }
based on h7PeR
Output for 5.4.0 - 5.6.30, hhvm-3.10.1 - 3.17.3, 7.0.0 - 7.2.6
Notice: Undefined variable: key in /in/40Vsr on line 5
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/40Vsr on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/40Vsr on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/40Vsr on line 3
Process exited with code 255.