preg match - Matching problem

I'm trying to match this string but hitting a few problems?

The string:

complete_str += 'ar.com%2fcached%2fs%22%3e%0d%0a%3c%2fSCRIPT%3e';

Code (markup):

What I'm using:

$html = @file_get_contents("$jsUrl");

preg_match_all('~complete_str += \'(.*?)\';~s', $html, $titleMatches);

foreach ($titleMatches[1] AS $titleMatch)
				{ 
				echo "complete_str: $titleMatch<br /><br />";
				}

Code (markup):

 

You need to escape "+". Because it has special meaning.

preg_match_all('~complete_str \+= \'(.*?)\';~s', $html, $titleMatches)