Any preg gurus?

I need a preg_replace() to turn

href="http://ex.com/custom.php?QUERY"

Code (markup):

into:

href="http://ex.com/custom.php?ex=1&QUERY"

Code (markup):

Thanks for any help. Meanwhile I'll be here

Regards

 

Try this:

$text = preg_replace('/custom\.php\?([^"]+)/', 'custom.php?ex=1&$1', $text);

PHP:

 

Works perfectly - I almost had it but for the [^"]+ I appreciate your help!