Display MX (Mail Exhange) records of a domain

checkMX.php

<?php

// Online tool: https://mxtoolbox.com/

function getMXRecords($domain) {
    $mxhosts = [];
    $weights = [];

    // Get MX records associated with the domain
    if (getmxrr($domain, $mxhosts, $weights)) {
        $mxRecords = array_combine($mxhosts, $weights);
        asort($mxRecords); // Sort by weight
        return $mxRecords;
    } else {
        return false; // No MX records found
    }
}

function show($domain) {
    $mxRecords = getMXRecords($domain);
    if ($mxRecords) {
        echo "MX Records for $domain:\n";
        foreach ($mxRecords as $host => $weight) {
            echo "Host: $host, Priority: $weight\n";
        }
    } else {
        echo "No MX records found for $domain.";
    }
}

show("your domain 1");
echo "\n";
show("your domain 2");