url validation or what?

[Anon]

Is there a way to check if any url (for a pic) is valid in php and in case it isn't go for another? I'm trying to set up a webcam and want the newest photo to be shown but if it's not in use then show the offline -pic. Any ideas anyone, please?

[[deleted]]

You can use fsockopen() to connect to the target server and you can do a HEAD request.
That will return the status of the request you made. If the URL is valid it will return 200, if it is invalid, you will a different value like 404, 503 etc.

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