What alternative function is suggested in the forum thread to replace checkdnsrr for email domain validation?

The issue with using the checkdnsrr function for email domain validation is that it is deprecated in newer PHP versions and may not always provide accurate results. A suggested alternative function to replace checkdnsrr for email domain validation is to use the getmxrr function, which checks for MX records in the DNS to verify the existence of a domain. 

function validateEmailDomain($email) {
    $domain = substr(strrchr($email, "@"), 1);
    return getmxrr($domain, $mxhosts);
}

// Example usage
$email = "example@example.com";
if(validateEmailDomain($email)) {
    echo "Email domain is valid.";
} else {
    echo "Email domain is invalid.";
}

Keywords

alternative function checkdnsrr email domain validation PHP forum thread

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