<?php
$servers = array(
1 => array('server1','username1','password1','port1'),
2 => array('server2','username2','password1','port2'),
3 => array('server3','username3','password1','port3')
);
foreach ($servers as $count => $servers_array)
{
echo $servers_array[0].":".$servers_array[1].":".$servers_array[2].":".$servers_array[3]."\n";
}