3v4l.org

run code in 300+ PHP versions simultaneously
<?php $heading_level = 'dsfhsdjfhdjshfjsdhfjdshfjshdfjhds 3242343242'; $heading_level++; $heading_level++; echo $heading_level;
Output for 8.3.0 - 8.3.4
Deprecated: Increment on non-alphanumeric string is deprecated in /in/3VAga on line 3 Deprecated: Increment on non-alphanumeric string is deprecated in /in/3VAga on line 4 dsfhsdjfhdjshfjsdhfjdshfjshdfjhds 3242343244
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.31, 7.1.0 - 7.1.23, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17
dsfhsdjfhdjshfjsdhfjdshfjshdfjhds 3242343244

preferences:
266.95 ms | 405 KiB | 412 Q