3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array('key.txt'); var_dump(md5($a));
Output for 5.0.0 - 7.1.0
Warning: md5() expects parameter 1 to be string, array given in /in/St2Ur on line 3 NULL
Output for 4.3.0 - 4.4.9
Notice: Array to string conversion in /in/St2Ur on line 3 string(32) "4410ec34d9e6c1a68100ca0ce033fb17"