3v4l.org

run code in 200+ PHP versions simultaneously
<?=7-"0x2";
based on hEVTH
Output for 7.1.0 - 7.4.0
Notice: A non well formed numeric value encountered in /in/Y378M on line 1 7
Output for 7.0.0 - 7.0.33
7
Output for 5.6.0 - 5.6.38
5