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run code in 200+ php & hhvm versions
Bugs & Features
<?php print array_key_exists(array(1, 2, 3), array(1, 2, 3));
Output for 4.3.2 - 7.1.7
Warning: array_key_exists(): The first argument should be either a string or an integer in /in/TRrlC on line 3
Output for 4.3.0 - 4.3.1
Warning: array_key_exists() [http://www.php.net/function.array-key-exists]: The first argument should be either a string or an integer in /in/TRrlC on line 3