How to execute php in string?

[eluser]rogierb[/eluser]
Hi all,

I think my brain froze since I'm unable to get a decent solution to this problem...

Problem:
Somehow I'm stuck with a very large string which holds PHP code:

Code:

$string = "a lot of text <php if($blah ==$blah$blah) { echo $dosomething} ?&gt; an yet another text"

echo $string // does not work, go figure

How do I execute the code within the string?

I even tried:

Code:

ob_start();
echo $string ;
contents = ob_get_contents();
ob_end_clean();
          
return $contents;

Even tried putting my head in the oven, still no luck...

So anyone...help...