I couldn't get the function to work with (absolute or relative) URL as argument on a site secured with Basic Authentication (platform: FreeBSD, Apache 2).
However, the absolute filename as argument did work.
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Manual Page -- [url]http://www.php.net/manual/en/function.getimagesize.php[/url]
Edit Note -- [url]http://master.php.net/manage/user-notes.php?action=edit+33984[/url]
Delete Note -- [url]http://master.php.net/manage/user-notes.php?action=delete+33984&report=yes[/url]
Reject Note -- [url]http://master.php.net/manage/user-notes.php?action=reject+33984&report=yes[/url]