splitting html

[gansad]

I have a string = '<img alt="image_description" src="http://images.domain.com/path/image_name.jpg">'

Need help to split the string to:
a) return the alt entry only i.e. image_description
b) return the path entry i.e. if the src is at [a href=\"http://images.domain.com/path1/path2/image_name.jpg\" target=\"_blank\"]http://images.domain.com/path1/path2/image_name.jpg[/a], it will return path1/path2/ only.

thanks.

[gansad]

[!--quoteo(post=369709:date=Apr 29 2006, 04:51 AM:name=gansad)--][div class=\'quotetop\']QUOTE(gansad @ Apr 29 2006, 04:51 AM) [snapback]369709[/snapback][/div][div class=\'quotemain\'][!--quotec--]
I have a string = '<img alt="image_description" src="http://images.domain.com/path/image_name.jpg">'

Need help to split the string to:
a) return the alt entry only i.e. image_description
b) return the path entry i.e. if the src is at [a href=\"http://images.domain.com/path1/path2/image_name.jpg\" target=\"_blank\"]http://images.domain.com/path1/path2/image_name.jpg[/a], it will return path1/path2/ only.

thanks.
[/quote]

Tried this but not as wanted:

preg_match_all("/<img alt=\"([^']*?)\">/", $img, $matches);
print_r($matches);

[gansad]

any one?
regex experts?