What is the significance of using IPv6 in PHP compared to IPv4?

When working with networking in PHP, it is important to consider using IPv6 over IPv4 due to the increasing scarcity of IPv4 addresses. IPv6 offers a much larger address space, allowing for more unique addresses to be assigned. By using IPv6, you can future-proof your code and ensure compatibility with modern networking standards.

// Connect to a server using IPv6
$socket = socket_create(AF_INET6, SOCK_STREAM, SOL_TCP);
socket_connect($socket, '2001:db8::1', 80);