3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = "FOObarBAZ"; //////////////////// $t = strtolower($s); //////////////////// echo $t;
Output for 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
foobarbaz
preferences:
50.98 ms | 406 KiB | 5 Q