3v4l.org

run code in 300+ PHP versions simultaneously
<?php function sum($x,$y){ echo $a+$b; } sum(3,4); ?>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Warning: Undefined variable $a in /in/hNp4Q on line 4 Warning: Undefined variable $b in /in/hNp4Q on line 4 0
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: a in /in/hNp4Q on line 4 Notice: Undefined variable: b in /in/hNp4Q on line 4 0
Output for 7.3.32 - 7.3.33
0
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Notice: Undefined variable: b in /in/hNp4Q on line 4 Notice: Undefined variable: a in /in/hNp4Q on line 4 0
preferences:
195.7 ms | 402 KiB | 185 Q