Regex: php match url

Question

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Converting ereg expressions to preg

http://www.google.co.in/aclk?sa=L&ai=C_jFQq_

http://www.google.co.in/aclk?sa=l&ai=CKKCUg

The highlighted part is common in my url.

My Regex

 if (preg_match('google.com/aclk\?sa\=L\&ai/i', $url))

Is this regex correct? I want to match my regex to my url.

The string "that's not working" is not a built-in error message in PHP. **Be more specific.** — , May 07 '12 at 16:05

score 0 · Answer 1 · answered May 07 '12 at 16:06

You've forgotten the delimiters:

if (preg_match('#google.com/aclk\?sa\=L\&ai/i#', $url))
                ^--                          ^--

Traditionally they're /, but since you're working on a URL, this is a case where it makes sense to use a different character, and I've chose # in this case.

It's unclear if that last /i is an actual delimiter and the case-insensitve flag, so I've left that in place as part of the pattern.

score 0 · Answer 2 · answered May 07 '12 at 16:13

0

Delimiter must not be alphanumeric or backslash, that is your error.

answered May 07 '12 at 16:13

Oscar Jara

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Regex: php match url

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