When using preg_replace() in PHP with strings generated at runtime, one can protect special regex characters (such as \'$\' or \'+\') in the search string by using preg_quote(). But what\'s the correc
For example,the regex below will cause failure reporting lookbehind assertion is not fixed length: #(?<!(?:(?:src)|(?:href))=["\\\']?)((?:https?|ftp)://[^\\s\\\'"<>()]+)#S
This ques开发者_运维问答tion is an educational demonstration of the usage of lookahead, nested reference, and conditionals in a PCRE pattern to match ALL palindromes, including the ones that can\'t b
After reading polygenelubricants\'s series of articles on advanced regular expressions techniques (particularly How does this Java regex detect palindromes?), I decided to attempt to create my own PCR
Is there a way of determining if the regular expression only matches fixed-length strings ? My idea would be to scan for *,+ and ? Then, some intelligent logic would be required to to look for {m,n} w
I am trying to extract 1 and 125 from this text开发者_如何学编程 with PHP: preg_match(\"/^(?P<digit>\\d+)/\", \"1 Foo ($125)\",$m)
I\'m trying to match a string that looks something like this: <开发者_运维百科;$Fexample text in here>>
I am trying to replace in a string all non word characters with empty string expect for spaces and the put together all multiple spaces as one single space.
I\'m trying to find an optimized regex to return the N words (if available) around another one to build a summary. The string is in UTF-8, so the definition of \"words\" is larger than just [a-z]. The
I have this line in one of my scripts and its throwing a deprec开发者_运维百科ated error. eregi_replace( \'\\.([a-z]{3,4})$\', \"-{$width}x{$height}.\\\\1\", $src );
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