Online PHP editor | refs for hkjsm

@ 2019-12-26T04:58:57Z

<?php

$string = '
    background: url(../../path/image1.png);
    background: url(../../../path/image2.png);
    background: url(../../../path/image3.png);
';

echo preg_replace('/\(\K[\/.]+/', '../', $string);