3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function hello() { echo "hello\n"; } declare(ticks=1); if (function_exists('register_tick_function')): register_tick_function('hello'); endif;
based on QRHe7
Output for 7.0.0 - 7.1.0
hello
Output for 4.3.0 - 5.6.28
hello hello