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run code in 150+ php & hhvm versions
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<?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 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined index: in /in/c3o96 on line 4
Output for 4.3.0 - 5.2.17
Notice: Undefined index: in /in/c3o96 on line 4