3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'aaa'; echo ++$a; $a = 'aaa!'; echo ++$a;
Output for 8.5.0 - 8.5.3
Deprecated: Increment on non-numeric string is deprecated, use str_increment() instead in /in/hj3ac on line 4 aab Deprecated: Increment on non-numeric string is deprecated, use str_increment() instead in /in/hj3ac on line 8 aaa!
Output for 8.3.5 - 8.3.30, 8.4.9 - 8.4.18
aab Deprecated: Increment on non-alphanumeric string is deprecated in /in/hj3ac on line 8 aaa!
Output for 8.1.34, 8.2.29 - 8.2.30
aabaaa!
preferences:
36.45 ms | 601 KiB | 4 Q