Test a socket connection.

socket-test.php

<?php
 
/**
 * Socket test.
 * <code>php socket-test.php <server> <port></code>
 * <code>php socket-test.php example.com 25</code>
 * @author Jonathan Jefferies
 */

try {
	$hostname = isset($_SERVER['argv'][1])? $_SERVER['argv'][1]: 'localhost';
	$port = isset($_SERVER['argv'][2])? $_SERVER['argv'][2]: 80;
	
	printf(' ? Attempting to connect to: %s:%u', $hostname, $port);
	 
	if(!is_resource(@fsockopen($hostname, $port, $code, $message, 5))) {
		throw new RuntimeException($message, $code);
	}

	printf("\r:) Successfully connected to: %s:%u", $hostname, $port);
}
catch(Exception $e) {
	printf("\nError: %u - %s", $e->getCode(), $e->getMessage());
	exit(1);
}