3v4l.org

run code in 500+ PHP versions simultaneously
<?php $a = []; $b = []; var_dump ($a['uuid'] === $b['uuid']);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.32, 8.4.1 - 8.4.23, 8.5.0 - 8.5.8
Warning: Undefined array key "uuid" in /in/7EOZc on line 5 Warning: Undefined array key "uuid" in /in/7EOZc on line 5 bool(true)
Output for 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 index: uuid in /in/7EOZc on line 5 Notice: Undefined index: uuid in /in/7EOZc on line 5 bool(true)
Output for 7.3.32 - 7.3.33
bool(true)
preferences:
108.89 ms | 1520 KiB | 4 Q