3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s=''; $s++; var_dump($s);
Output for 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
Deprecated: Increment on non-alphanumeric string is deprecated in /in/t4rhN on line 4 string(1) "1"
Output for 8.2.0 - 8.2.29
string(1) "1"
preferences:
52.66 ms | 407 KiB | 5 Q