Online PHP editor | refs for OkkWt

@ 2020-12-23T03:55:13Z

<?php

function morsedecode($code){
    $search = array('/(?<![.-])\.-(?![.-])/', '/(?<![.-])-\.\.\.(?![.-])/');
    $replace = array('a', 'b');
    return preg_replace($search, $replace, $code);
}

echo morsedecode(".- -...");