Is there a way for PHP to attempt to open a URL and return the HTTP response header? For example, I want to make a PHP page which will redirect a visitor to a mirror site if it encounters a 404 Not found error whilst trying to open the website homepage. This test page will reside on a seperate server. I was thinking maybe attempting to open the homepage with something like fopen() and, using nested if() statements, try the next mirror in the list if the fopen() command didnt succeed. Any ideas?
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