3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $test = "Test String"; var_dump(array_key_exists('pdf', $test));
based on PL637
Output for 5.3.0 - 7.2.0
Warning: array_key_exists() expects parameter 2 to be array, string given in /in/CQsvL on line 4 NULL
Output for 4.3.2 - 5.2.17
Warning: array_key_exists(): The second argument should be either an array or an object in /in/CQsvL on line 4 bool(false)
Output for 4.3.0 - 4.3.1
Warning: array_key_exists() [http://www.php.net/function.array-key-exists]: The second argument should be either an array or an object in /in/CQsvL on line 4 bool(false)