Re: About Preg Match patterns

On Thu, Aug 2, 2012 at 12:49 AM, Tolga <kacmaztolga@gmail.com> wrote: > hi, i have a question, i dont know what keywords to search, so im asking > here. > > while using preg_match, there are lots of thing that can be written as > $pattern. > for example: > preg_match("/php/i", "PHP is the web scripting language of choice.") > > what is the meaning of /i ? The /x character switch is called a regexp modifier. In this case, /i is for cAsE-iNsEnSiTiViTy. > or '@^(?:http://)?([^/]+)@i' there are lots of chars > here, To match a URL, insensitively, whether or not it contains http://. In this case, @ is used as the separator because of the slashes in the protocol and path. > or this: /(?P<name>\w+): (?P<digit>\d+)/ > /[^\\d\\sa-zA-Z$_]/ > /^[a-zA-Z\p{Cyrillic}0-9\s\-]+$/u (there is a extra "/u" ) > > #^http:\/\/(.*)\.(gif|png|jpg)$#i > #<head>(.*?)<\/head>#si > > there is lots and lots of different usage of these. > > my question is, where can i find a very detailed information about these ? i > want and need to know whats what about these. I'd recommend http://regular-expressions.info/, which is a really handy site for regexp reference by users of all skill levels. -- </Daniel P. Brown> Network Infrastructure Manager http://www.php.net/