Help with preg_match_all regex for alt tags

Hey y'all ... i am having alittle trouble with this regex for finding
ALT tags for images...


Here is my statement
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preg_match_all("'alt[^>]*?>.*?[^>]'si", $output, $alt_tags);	

Evaluating
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[other html code]... <img src="images/race-parts_wheels-tires.jpg"
vspace="2" border="0" alt="Wheel & Tire Acc" /> ...[other html code]

I am currently getting
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alt="Wheel & Tire Acc" /><

I want this result
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alt="Shopping Cart"			


Thanks for your help
-- 
Joe Harman