3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function siteURL() { return "http://www.luntech.com?dev=desktop&name=value"; } define('SITE_URL', siteURL()); //returns http://example.com/dir/ define('CKEDITOR', 'http://m.luntech.com/default.asp?dev=mobile&name=value'); // ignore the previous code is just to emulate your constants and functions // the answer is the following line: echo str_replace(SITE_URL,'',CKEDITOR); ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
http://m.luntech.com/default.asp?dev=mobile&name=value