3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'SiteContentManagement'; echo strtolower(preg_replace('~(?!^)(?=[A-Z])~', '-', $string)); echo "\n"; echo strtolower(preg_replace('~(?!^)[A-Z]~', '-$0', $string)); echo "\n"; echo strtolower(preg_replace('~[^A-Z]+\K(?=[A-Z])~', '-', $string));

preferences:
26.46 ms | 405 KiB | 5 Q