3v4l.org

run code in 300+ PHP versions simultaneously
<?php $input = array("Neo", "Morpheus", "Trinity", "Cypher", "Tank"); $rand_keys = array_rand($input); var_dump(rand_keys);
Output for 7.2.0 - 7.2.25, 7.3.0 - 7.3.12, 7.4.0
Warning: Use of undefined constant rand_keys - assumed 'rand_keys' (this will throw an Error in a future version of PHP) in /in/4SdWM on line 4 string(9) "rand_keys"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
Notice: Use of undefined constant rand_keys - assumed 'rand_keys' in /in/4SdWM on line 4 string(9) "rand_keys"

preferences:
201.45 ms | 404 KiB | 322 Q