Is it possible to use str_Replace for a dynamic string?

I have a string:

<!--START name abc from domain.com.--> <a href="http://www.mysite.com"><img src="http://www.mysite.com" border="0"></a> <!--END MERCHANT:name abc from domain.com-->

I want to replace everything between the start <!-- --> tags and also at the end I want to replace everything in the <!-- --> including the tags themselves.

I tries using str_replace, but my problem is the abc is a variable so it keeps changing in every record.

 

$str = preg_replace('/<!--start.*?-->/i', '<p>replacement for START</p>', $str);

Code (markup):

Learn preg. It's the heart of the solution to a great many tasks.

 

Thanks, its works great, are there any websites you would recommend to learn preg?

 

try www.regular-expressions.info