3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $string = '<>!$'; $string = str_replace('<', 'a', $string); $string = str_replace('>', 'b', $string); $string = str_replace('!', 'c', $string); $string = str_replace('$', 'd', $string); echo $string; // abcd
Output for 4.3.0 - 5.0.5, 5.1.1 - 7.2.0
abcd
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/MfvKt on line 9
Process exited with code 255.