<?php
// connect to the internet using the '192.168.0.100' IP
$opts = array('socket' =>
array('bindto' => '192.168.0.100:0'));
// connect to the internet using the '192.168.0.100' IP and port '7000'
$opts = array('socket' =>
array('bindto' => '192.168.0.100:7000'));
// connect to the internet using port '7000'
$opts = array('socket' =>
array('bindto' => '0:7000'));
// create the context...
$context = stream_context_create($opts);
// ...and use it to fetch the data
echo file_get_contents('http://www.example.com', false, $context);
?>