3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $str = 'http://asas.pl/asdasd//asdads//asd.pdf'; $regexp = '/(?:[^\/\/])(\/\/)/'; echo preg_replace($regexp, '/', $str);
based on TXPmI
Output for 4.3.0 - 7.1.7
http/asas.pl/asdas/asdad/asd.pdf