3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $data = []; $required =['validation' => 0, 'http_verb' => 0, 'response' => 0, 'url' => 0]; //we only care about the keys of this array $missingKeys = array_diff_key($required, $data); $missingCount = sizeof($missingKeys); if ($missingCount > 1) { var_dump($missingKeys); }
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(4) { ["validation"]=> int(0) ["http_verb"]=> int(0) ["response"]=> int(0) ["url"]=> int(0) }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/eMN21 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/eMN21 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/eMN21 on line 3
Process exited with code 255.