3v4l.org

run code in 300+ PHP versions simultaneously
<?php function hyphenate($str) { return implode("-", str_split($str, 3)); } echo hyphenate("ABDC");
Output for 7.3.0 - 7.3.29, 7.4.0 - 7.4.21, 8.0.0 - 8.0.8
ABD-C

preferences:
95.8 ms | 459 KiB | 5 Q