note 76197 added to reference.pcre.pattern.syntax

When enclosing your regular expression in double quotes, back references require two backslashes. For example, \1 is the ascii character \1. You need to provide \\1 to get the back reference. ---- Server IP: 64.71.164.2 Probable Submitter: 207.22.48.107 ---- Manual Page -- http://www.php.net/manual/en/reference.pcre.pattern.syntax.php Edit -- https://master.php.net/note/edit/76197 Del: integrated -- https://master.php.net/note/delete/76197/integrated Del: useless -- https://master.php.net/note/delete/76197/useless Del: bad code -- https://master.php.net/note/delete/76197/bad+code Del: spam -- https://master.php.net/note/delete/76197/spam Del: non-english -- https://master.php.net/note/delete/76197/non-english Del: in docs -- https://master.php.net/note/delete/76197/in+docs Del: other reasons-- https://master.php.net/note/delete/76197 Reject -- https://master.php.net/note/reject/76197 Search -- https://master.php.net/manage/user-notes.php