Deletion of some text using PHP

With qJerry you can work with XML in PHP is as easy as jQuery in JavaScript with HTML.
\r
Here's the code:

q('Link')->removeAttr('title')->dump(); 

outputs:

<?xml version="1.0"?>\rLink

Something like that, not tested, but should work:
\r

str_replace('Link','Link',$Text);

Put the engine to work with the DOM as described above. Another alternative is to use JS, just not quite sure if it's appropriate in Your case (JS will work after the formation of the source).

People, and there is an html parser, it on habré used... There you can specify allowed tags and attributes. What is it called?