Are there any common pitfalls or misunderstandings when using the checkdnsrr function in PHP for domain verification?

One common pitfall when using the checkdnsrr function in PHP for domain verification is not specifying the type parameter correctly. The type parameter should be set to "MX" if you are checking for mail exchange records. Another pitfall is not handling potential errors or exceptions that may occur during the DNS lookup process. 

$domain = 'example.com';
$type = 'MX';

if(checkdnsrr($domain, $type)) {
    echo 'Domain has valid MX records';
} else {
    echo 'Domain does not have valid MX records';
}

Keywords

checkdnsrr PHP domain verification pitfalls misunderstandings

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