What is the purpose of using the getmxrr function in PHP and how can it be utilized effectively?

The getmxrr function in PHP is used to retrieve the MX (Mail Exchange) records for a given domain. This can be useful when setting up email functionality in a web application, as it allows you to determine the mail servers responsible for handling emails for a particular domain. By utilizing getmxrr, you can effectively retrieve and utilize the necessary MX records to ensure proper email delivery. 

$domain = 'example.com';
$mx_records = [];
if (getmxrr($domain, $mx_records)) {
    foreach ($mx_records as $mx_record) {
        echo "Mail server for $domain: $mx_record\n";
    }
} else {
    echo "No MX records found for $domain\n";
}

Keywords

getmxrr PHP function MX records utilization

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