3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a() { global $a; $a = 10; } function b() { echo $a; } a(); b(); echo $a;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Warning: Undefined variable $a in /in/E6ZdW on line 9 10
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Warning: Undefined variable $a in /in/E6ZdW on line 9 10
Output for 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: a in /in/E6ZdW on line 9 10
Output for 7.3.32 - 7.3.33
10

preferences:
184.49 ms | 401 KiB | 215 Q