Posted by Charles on 11/30/07 01:39

Hello,

I'm trying to extract the home page URL out of a any URL from the same
web site
For instance if I'm on http://www.regular-expressions.info/javascriptexample.html
I want to extract http://www.regular-expressions.info
So, I have my regex ready, it's working fine: http://[\w.-]+
But when I add it to PHP's preg_match function this way:

preg_match('/http\:\/\/\[\\w.-\]+/','http://www.regular-
expressions.info/javascriptexample.html',$matches);

I get this error message:

Warning: preg_match() [function.preg-match]: Delimiter must not be
alphanumeric or backslash
I'm a little lost, I read this page http://www.php.net/manual/en/function.preg-match.php
and I wasn't able to find what is wrong. On the page they put slashes
around the regex, sometimes they don't... Do you know what is causing
the error message?
Thanks,

--
Charles.

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