3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array(0 => array("key" => "val"), 1 => array("key" => "anotherval")); $key = "key"; $t = []; var_dump($t[]="foo"); /* $result = array_reduce($arr, function(&$cur, $item) use ($key) { return $cur=array_key_exists($key, $item)?array_merge($cur, [$item[$key]]):$cur; }, []); var_dump($result);*/
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(3) "foo"
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/6eH5G on line 5
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/6eH5G on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/6eH5G on line 5
Process exited with code 255.