src: http://www.example.com/sites/all/default/files/images/test.png
Array
(
    [scheme] => http
    [host] => www.example.com
    [path] => /sites/all/default/files/images/test.png
)
src: www.example.com/sites/all/default/files/images/test.png
Array
(
    [path] => www.example.com/sites/all/default/files/images/test.png
)
src: /sites/all/default/files/images/test.png
Array
(
    [path] => /sites/all/default/files/images/test.png
)
src: sites/all/default/files/images/test.png
Array
(
    [path] => sites/all/default/files/images/test.png
)