3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php error_reporting(E_ALL); $str = "index.php?id=" + 1; var_dump($str);
Output for 7.1.0
Warning: A non-numeric value encountered in /in/bjOrU on line 3 int(1)
Output for 4.3.0 - 7.0.14
int(1)