int(2) array(4) { [0]=> array(2) { [0]=> string(42) "" [1]=> string(73) "" } [1]=> array(2) { [0]=> string(24) "src="http://example.com"" [1]=> string(30) "src="http://example.com/asdf/"" } [2]=> array(2) { [0]=> string(18) "http://example.com" [1]=> string(24) "http://example.com/asdf/" } [3]=> array(2) { [0]=> string(0) "" [1]=> string(3) "foo" } }