Warning: preg_match(): Unknown modifier 'c' in /DomainMapping.php on line 43

I went to the line and tried a few things.

(1) preg_quote($http_domain, ‘/’)
– This would change “\d.gravatar.com” to “\\d\.gravatar\.com”. Which is right, but we need the \d to be parsed as regexp.

(2) preg_match(‘|’ . $http_domain . ‘|’, $url, $matches);
– I changed the delimiters to another character, but again, we could be using it inside the regexp.

(3) str_replace(‘/’, ‘\/’, $http_domain)
– I just decided to use this one. It is working fine, no more warnings. Try it out and make the fix if applicable and/or give me a recommendation please.

Thanks.

Hi,

I’m having the same problem.

The “preg_match(): Unknown modifier ‘c’ in /home/grievingtogether/public_html/wp-content/plugins/wordpress-https/lib/WordPressHTTPS/Module/DomainMapping.php on line 43”

isn’t on all the pages. Main homepage, main tabs are working fine. Except when I go to the menu and scroll down and select.

I’m not sure what’s going on.

The website is https://www.olivias4tea.com

You can see the error on https://olivias4tea.com/olivias-dollhouse-tea-room/

Any help would be greatly appreciated.

Thanks

Go to the file and line below:

/wp-content/plugins/wordpress-https/lib/WordPressHTTPS/Module/DomainMapping.php on line 43

Replace:

preg_match(‘/’ . $http_domain . ‘/’, $url, $matches);

With:

preg_match(‘/’ . str_replace(‘/’, ‘\/’, $http_domain) . ‘/’, $url, $matches);

Hi Marco,

thanks so much!

It works.

Glad to help. You’re welcome ??

Marking it as solve.

Well, actually, the plugin author should apply this fix. Hope he/she does. Still a great plugin! Thanks.

Perhaps they should but I guess they didn’t ’cause I ran into the same problem (WordPress 4.0, plugin WordPress HTTPS 3.3.6) but with a ‘p’ instead of ‘c’. But it seems like the same solution as you proposed above did the trick, again ??
Great stuff, thanks !

No more Warnings ??

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