Re: Parsing HTML href-Attribute

>> I believe the OP wanted to leave already-absolute paths alone >> (i.e., only convert relative paths). The regex does not take into >> account fully-qualified URLs (i.e., >> http://www.google.com/search?q=php) and it does not >> determine if a >> given path is relative or absolute. He was wanting to take the href >> attribute of an anchor tag and, **IF** it was a relative path, turn >> it into an absolute path (meaning to append the relative path to >> the absolute path of the current script). > > That's exactly what this regex does :-) The (?!$prefix) negative > lookahead assertion fails the match if it's already an absolute URL. > >> That was my understanding. Perhaps you saw it differently, but I >> don't believe your pattern is enough to accomplish what the OP was >> asking for--hence "a lot" of code was in my reply. ;) >> >> Believe me, I'm the first guy to hop on the "do it with a regex!" >> bandwagon... but there are just some circumstances where regex >> can't do what you need to do (such as more-than-superficial >> contextual logic). >> >> HTH, >> >> >> // Todd > Ahh, but you uncovered a problem for me if the href contains an absolute URL that doesn't contain the prefix. Here's the fix: $html = preg_replace("|(href=['\"]?)(?!http(?:s)?://)[/]?([^>'\"\s]+)(\s)?|", "$1http://www.example.com/2$3", $html); -- Thanks! -Shawn http://www.spidean.com