What is the purpose of binding a port to a specific IP address in PHP socket programming?

Binding a port to a specific IP address in PHP socket programming allows the server to listen for incoming connections on a specific network interface. This is useful in scenarios where the server has multiple network interfaces or IP addresses and needs to restrict incoming connections to a specific one. 

```php
<?php

$address = "127.0.0.1"; // IP address to bind to
$port = 8888; // Port to bind to

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_bind($socket, $address, $port);

// Rest of the socket server code goes here

?>

Keywords

PHP socket programming binding port IP address

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