PHP preg_replace

modifying urls’s

[humpo]

Never been able to master regular expressions but some how mange, but not with this one.

Need the regular expression for modifying hrefs(so not other urls in images etc)

Example change
<a href=http://www.site1.com> to <a href="www.site2.com?q=http://www.site1.com">

Need it to work with urls that use relative paths so change
<a href="/"> to <a href="www.site2.com?q=/">

Be nice if it worked with all possible urls
<a href="http://www.site1.com">
< a href=‘http://www.site1.com’>
<a href=http://site1.com>
Etc

I’ve found a few similar examples and near working bits of code but i rarely use preg_replace and don’t know enough to get them to work.

Any help with this will be greatly appreciated thanks.

[ogletree]

Maybe you can use parse_url to help with that.

[humpo]

Thanks ogletree

I’m being a bit thick, so i better stick with the preg_replace for now.

Not sure how i would use parse_url to achieve what i want.

I want to parse an entire html file and replace all the href’s with another url, using the old url/relative path as a parameter.

[deizu]

You can try the following. No effort is made to verify the original url string is a valid url.

$content = <<<EOQ
<a href="http://www.google.com"></a>
<a href=http://www.ala.com></a>
EOQ;
$content = preg_replace('#(<a[^>]+href="?)([^>" ]+)("?[^>]*>)#is','\\1http://www.site2.com?q=\\2\\3', $content);
print $content;

[edited by: eelixduppy at 12:37 pm (utc) on Mar. 20, 2008]
[edit reason] disabled smileys [/edit]

[humpo]

Thanks deizu that's perfect!
:)

[coopster]

and welcome to WebmasterWorld, deizu.