<?php$bool = dns_get_mx ( "www.example.com", // string $hostname $mxhosts, // array &$mxhosts // [array &$weight]);?>
$mxhosts = [] $bool = false
[]
false
#1
dns_get_mx
("www.example.com", $mxhosts)
#2
("domainmx.net", $mxhosts)