Why preg_replace throws me a "Unknown modifier" error?
modifier, php, preg-replace
Solution
You are using forward-slashes as your regex pattern delimeter, so `/<title>(.*)</title>/Ui'` will not work (`</title>` has a forward slash).
You should be able to escape the forward slash or use a different delimiter that is not contained within the pattern, for example
'/<title>(.*)<\/title>/Ui' //(esacaping)
or
'~<title>(.*)</title>~Ui' //different delimiter
Problem
I keep getting this error: Warning: preg_match() [function.preg-match]: Unknown modifier 't' in D:\xampp\htdocs\administrator\components\com_smms\functions\plugin.php on line 235 on: ``` $PageContent = preg_replace($result->module_pregmatch, '', $PageContent); ``` I do a var_dump on the $result->module_pregmatch and I get the following: ``` string '/<title>(.*)</title>/Ui' (length=23) string '/<meta[^>]*name=["|\']description["|\'][^>]*content=["|\'](.*)["|\']\s*\/>/Ui' (length=77) string '/<meta[^>]*name=["|\']keywords["|\'][^>]*content=["|\'](.*)["|\']\s*\/>/Ui' (length=74) string '/<meta[^>]*name=["|\']author["|\'][^>]*content=["|\'](.*)["|\']\s*\/>/Ui' (length=72) string '/<meta[^>]*name=["|\']copyright["|\'][^>]*content=["|\'](.*)["|\']\s*\/>/Ui' (length=75) string '/<meta[^>]*name=["|\']robots["|\'][^>]*content=["|\'](.*)["|\']\s*\/>/Ui' (length=72) string '/<meta[^>]*http=equiv=["|\']content-language["|\'][^>]*content=["|\'](.*)["|\']\s*\/>/Ui' (length=88) string '/<meta[^>]*http-equiv=["|\']content-type["|\'][^>]*content=["|\'](.*)["|\']\s*\/>/Ui' (length=84) string '/<link[^>]*href=["|\'](.*)["|\'][^>]*rel=["|\']shortcut[^>]*icon["|\'][^>]*type=["|\']image\/x-icon["|\']\s*\/>/Ui' (length=114) string '/<link[^>]*href=["|\'](.*)["|\'][^>]*rel=["|\']alternate["|\'][^>]*type=["|\']application\/rss\+xml["|\'][^>]*title=["|\'](.*)["|\'][^>]\/>/Ui' (length=142) string '/<link[^>]*href=["|\'](.*)["|\'][^>]*rel=["|\']alternate["|\'][^>]*type=["|\']application\/atom\+xml["|\'][^>]*title=["|\'](.*)["|\'][^>]\/>/Ui' (length=143) ``` Can someone please tell me what I'm doing wrong? I've been stuck on this error for way too long...