3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "lá"; echo $string[0] , "\n" , $string[1] , "\n" , $string[2]; echo "\n\n"; $string[1] = "B"; echo $string;
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.27, 8.0.0 - 8.0.15, 8.1.0 - 8.1.2
l � � lB�

preferences:
30.04 ms | 460 KiB | 5 Q