3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php print_r array_keys('hello', 'bye');
Output for 5.4.0 - 5.4.25
Parse error: syntax error, unexpected 'array_keys' (T_STRING) in /in/RXev1 on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_STRING in /in/RXev1 on line 3
Process exited with code 255.