note 89720 added to function.preg-quote

I wanted to escape a string of characters so I could match them in [], i.e. [.,-!"§$%\\\[\]\^]. Unfortunately preg_quote does not escape the - character which has a special meaning in [], i.e. [a-z]. So I used this hack: make - the delimiter of the expression, i.e. preg_quote(userinput, "-") preg_replace("-[$userinput]-u", "", $str) Apparently using a special char as a delimiter of a regular expression disables this character, i.e. even if it's escaped it's not understood as special character for the expression anymore. so the pattern "-[a\\-z]-u" matches the characters a, - and z, and not abc...xyz. It would be nice if preg_quote also escaped characters that have special meanings even if they have this meaning only under certain conditions, such as inside []. ---- Server IP: 212.124.37.9 Probable Submitter: 93.211.36.37 ---- Manual Page -- http://www.php.net/manual/en/function.preg-quote.php Edit -- https://master.php.net/note/edit/89720 Del: integrated -- https://master.php.net/note/delete/89720/integrated Del: useless -- https://master.php.net/note/delete/89720/useless Del: bad code -- https://master.php.net/note/delete/89720/bad+code Del: spam -- https://master.php.net/note/delete/89720/spam Del: non-english -- https://master.php.net/note/delete/89720/non-english Del: in docs -- https://master.php.net/note/delete/89720/in+docs Del: other reasons-- https://master.php.net/note/delete/89720 Reject -- https://master.php.net/note/reject/89720 Search -- https://master.php.net/manage/user-notes.php