How to check if TV stream is working by PHP

Question

Is it possible to read something from UDP stream like this

udp://@220.155.228.45:1432

to check if it works?

IP here is fake but I tried this code on the IP and port that I know working but it failed:

$sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
socket_bind($sock, '220.155.228.45', '1432') or die('Could not bind to address');

And what mean @ in address? Without @ players like VLC Media Player cannot read stream.