3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'test test test test'; echo preg_replace("/\w+\K/", '*', $string);
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
test* test* test* test*

preferences:
61.5 ms | 406 KiB | 5 Q