ereg replace or preg replace

[ccgorman]

Hello,

I have HTML content that I want to do a search and replace of urls. If the content contains an <a href="" I want it to take the content and append an id to the end. For example:

<p>content here <a href="http://www.somewhere.com/">link</a></p>

would change to:

<p>content here <a href="http://www.somewhere.com/?id=100">link</a></p>

and

<p>content here <a href="http://www.somewhere.com/?var=1">link</a></p>

would change to:

<p>content here <a href="http://www.somewhere.com/?var=1&id=100">link</a></p>

Basically I just want to search for hrefs and add a tracking on the end.

Thanks,
Chris

[NogDog]

This seems to work:

<?php
$testData = <<<EOD
<p>content here <a href="http://www.somewhere.com/">link</a></p>
<p>content here <a href="http://www.somewhere.com/?var=1">link</a></p>
EOD;

$search = array(
   '/<a\s[^>]*href=[^\s>]+\?[^\s>\'"]+(?=\'|"|\s|>)/i',
   '/<a\s[^>]*href=[^\s>\?][^\s>\?\'"]+(?=\'|"|\s|>)/i',
);
$replace = array(
   '\\0&id=100',
   '\\0?id=100'
);

$output = preg_replace($search, $replace, $testData);
printf("<pre>%s</pre>", htmlspecialchars($output));
?>