Скрипт проверки наличия IP в СПАМ базах. PHP

<?php

function checkSpam($ipAddress) {
    // Validate the IP address
    if (!filter_var($ipAddress, FILTER_VALIDATE_IP)) {
        echo "Invalid IP address format\n";
        return;
    }

    // List of spam databases to check
    $spamDatabases = array(
        "b.barracudacentral.org",
        "bl.spamcop.net",
        "dnsbl.sorbs.net",
        "zen.spamhaus.org"
    );

    // Check each database for the IP address
    foreach ($spamDatabases as $db) {
        $query = $ipAddress . "." . $db;
        $result = gethostbyname($query);

        // Check if the IP address is listed
        if ($result == "127.0.0.2" || $result == "::1") {
            echo "$ipAddress found in $db\n";
            return;
        } else {
            echo "$ipAddress not found in $db\n";
        }
    }
}

// Example usage
$ipToCheck = "123.456.789.10"; // Replace this with the IP address you want to check
checkSpam($ipToCheck);

?>