Bug #76212 [Com]: Filter var URL with underscore in hostname

Edit report at https://bugs.php.net/bug.php?id=76212&edit=1 ID: 76212 Comment by: spam2 at rhsoft dot net Reported by: dimitri at sponsorboost dot com Summary: Filter var URL with underscore in hostname Status: Open Type: Bug Package: Filter related Operating System: Windows (XAMPP) PHP Version: 7.0.29 Block user comment: N Private report: N New Comment: just don't do that - countless developer hours are wasted in the past years because of such hostnames and then finally test in different browsers and find out after hhours that MSIE don't like cookies for hostnames which must not exist Previous Comments: ------------------------------------------------------------------------ [2018-04-12 08:44:52] sjon at hortensius dot net I think this explains it pretty good: https://stackoverflow.com/a/2183140/3749523 > for host names (or for URLs, which include a host name), [..] this is different, the relevant > standard is RFC 1123, section 2.1 "Host Names and Numbers" which limits host names to > letters-digits-hyphen. ------------------------------------------------------------------------ [2018-04-12 08:29:11] dimitri at sponsorboost dot com Description: ------------ Hostname can't contain underscore '_'. I find RFC norme : this https://tools.ietf.org/html/rfc3986#section-2.3 Test script: --------------- var_dump(filter_var('http://testscript.com',FILTER_VALIDATE_URL)); var_dump(filter_var('http://test_script.com',FILTER_VALIDATE_URL)); Expected result: ---------------- string 'http://testscript.com' string 'http://test_script.com' Actual result: -------------- string 'http://testscript.com' boolean false ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=76212&edit=1