3v4l.org

run code in 300+ PHP versions simultaneously
<?php function morsedecode($code){ $search = array('/(?<![.-])\.-(?![.-])/', '/(?<![.-])-\.\.\.(?![.-])/'); $replace = array('a', 'b'); return preg_replace($search, $replace, $code); } echo morsedecode(".- -...");
Output for 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 8.0.0 - 8.0.12, 8.1rc1 - rc3
a b

preferences:
24.52 ms | 528 KiB | 6 Q