php - Specify source ip using fsockopen

Question

On a server with multiple IPs routed to it, I'd like to use PHP's fsockopen to open from a non-primary-interface ip (or a comparable method to be able to make fread and fwrites from a different ip)

Answer 1

This is not possible with fsockopen. You have to use the sockets wrapper:

$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_bind($sock, '192.168.1.100');
socket_connect($sock, 'stackoverflow.com', 80);