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run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(12 => '12 o', 14 => '14 o'); var_dump(key(array_intersect_key($a, array('12' => null))));
Output for 5.1.0 - 7.1.0
int(12)
Output for 5.0.0 - 5.0.5
Fatal error: Call to undefined function array_intersect_key() in /in/Kp3ML on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_intersect_key() in /in/Kp3ML on line 4
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: array_intersect_key() in /in/Kp3ML on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_intersect_key() in /in/Kp3ML on line 4