PHP program to connect in MSSQL using Ubunto

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PHP

Ubuntu

connection

Good day sir.
i've been doing a project which is to connect in MSSQL using ubunto in PHP program..
And now i've encountered an error which i couldn't solve. Please help me!
this is my program and below of the program is my error

<?php 
	ini_set('display errors', 1);
	$server = 'sq2ct0tocw.database.windows.net:1433';
	$username = 'SQLogbox@sq2ct0tocw';	
	$password = 'LBPassword2013';
	$db= 'LogboxDB';
	$con = mssql_connect('sq2ct0tocw.database.windows.net:1433','SQLogbox@sq2ct0tocw','LBPassword2013') or die (mssql_get_last_message());
	if(!$con)
	{
		die('Could not Connect'.mssql_get_last_message());
	} 
	else
	{
		echo 'Connection Established!';
	}

error :
Unable to connect to server: sq2ct0tocw.database.windows.net:1433
Thanks for the help :D