3v4l.org

run code in 300+ PHP versions simultaneously
<?php $dna = "273385 14093 1522520 1759 277697 283096 1133193 191835 246752 204984 973590"; echo preg_replace('~\d+~', 'm#$0', $dna);
preferences:
30.46 ms | 404 KiB | 5 Q