Edit report at https://bugs.php.net/bug.php?id=62646&edit=1
ID: 62646 Updated by: fel...@php.net Reported by: Andreas dot Klauer at metamorpher dot de Summary: Impossible to escape/match delimiters within \Q \E -Status: Open +Status: Not a bug Type: Bug Package: PCRE related PHP Version: 5.3.15 Block user comment: N Private report: N New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php Hi, the pcretest tool doesn't even handle the \Q..\E stuff as you mentioned. It works just like the [..] one. And using Perl I did to escape the delimiter inside \Q..\E. Previous Comments: ------------------------------------------------------------------------ [2012-07-24 00:33:54] Andreas dot Klauer at metamorpher dot de Description: ------------ PCRE allows literal matches of strings between \Q and \E. This is also documented, \Q.$.\E will match literal .$. However, if that literal string contains the regexp delimiter (/ or # or ~ or () or whichever you choose), the regexp compile either fails, or the match fails because it tries to match the escape char used to escape the delimiter. The problem is php_pcre::pcre_get_compiled_regex_cache() which parses the delimiter, not taking \Q \E in account. Delimiters between \Q \E should be treated as literal characters, not delimiters (that's what Perl does); or alternatively if delimiters have to be escaped, the escape char should be removed from the pattern. Workaround: Use preg_quote() instead of \Q \E if there's a chance the delimiter may appear within \Q \E Test script: --------------- preg_replace("/\Q/#~\E/", ...); => Warning: preg_replace(): Unknown modifier '#' in php shell code on line 1 preg_replace("/\Q\/#~\E/", "OK", "/#~"); => "/#~" (expected "OK") preg_replace("/\Q\/#~\E/", "FAIL", "\/#~") => "FAIL" (expected "\/#~"); ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=62646&edit=1
