3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = range('A','Z'); for($i = 0; $i <= count($arr); $i+=2){ echo "$arr[$i] \n"; }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
A C E G I K M O Q S U W Y Warning: Undefined array key 26 in /in/1o5Om on line 5
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
A C E G I K M O Q S U W Y Notice: Undefined offset: 26 in /in/1o5Om on line 5
Output for 7.3.32 - 7.3.33
A C E G I K M O Q S U W Y
preferences:
222.82 ms | 401 KiB | 330 Q