3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(substr('abcdefg'), 1, -1);
Output for 5.3.0 - 7.2.0
Warning: substr() expects at least 2 parameters, 1 given in /in/r9Tgc on line 3 NULL int(1) int(-1)
Output for 4.3.0 - 5.2.17
Warning: Wrong parameter count for substr() in /in/r9Tgc on line 3 NULL int(1) int(-1)