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run code in 200+ php & hhvm versions
Bugs & Features
<?php $input = array("Neo", "Morpheus", "Trinity", "Cypher", "Tank"); $rand_keys = array_rand($input,1); echo $input[$rand_keys[0]] . "\n";
Output for 5.3.0 - 7.2.0
Notice: Undefined index: in /in/MSgpI on line 4
Output for 4.3.0 - 5.2.17
Notice: Undefined index: in /in/MSgpI on line 4