Miniature PHP webserver not accepting connections on anything other than 127.0.0.1:80

Answer 1

Change this line

$conn_ip = "127.0.0.1"; // probably localhost

to

$conn_ip = 0;

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• 127.0.0.1 means that your "webserver" will only listen for connections only on 127.0.0.1 (localhost)
• 0 means that your "webserver" will listen on each and every IP of your computer

Answer 2

Change your socket bind to:

socket_bind ($server, 0,$conn_port);

By specifying a $conn_ip, you are only binding to that interface. In this case, you are binding to the loopback. This is the default for testing, as you may not want to allow the world to connect to your service when you first start writing it.