Chad : Each image is requested one by one and only the first 12 characters of the return are read, as they are the ones with the status code in them. After that the connection is closed. Theoretically it will use output about 200 bytes and input 12 bytes per request. Practically I don't know how web servers work, but I suspect once php has sent a close to the other server the transfer will stop. So no, not much bandwidth
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