// Load the DHCP page HTML into a DOMDocument
$dom = new DOMDocument();
@$dom->loadHTML($dhcp_response);

libxml_clear_errors();

// Create a new DOMXPath instance
$xpath = new DOMXPath($dom);

// Initialize an array to store IP addresses
$ip_addresses = [];

// Find the table containing the DHCP Clients information
$tables = $dom->getElementsByTagName('table');

foreach ($tables as $table) {
    // Check if the table has headers matching the DHCP Clients table
    $header_row = $table->getElementsByTagName('tr')->item(0);
    if ($header_row) {
        $headers = $header_row->getElementsByTagName('td');
        if ($headers->length > 1 && trim($headers->item(1)->nodeValue) == 'IP Address') {
            // Iterate over each row in the table (skip header row)
            $rows = $table->getElementsByTagName('tr');
            for ($i = 1; $i < $rows->length; $i++) {
                $cells = $rows->item($i)->getElementsByTagName('td');
                if ($cells->length > 1) {
                    // Extract the IP address from the second cell
                    $ip = trim($cells->item(1)->nodeValue);
                    $ip_addresses[] = $ip;
                }
            }
            break; // Exit loop after finding the desired table
        }
    }
}

// Output the extracted IP addresses
foreach ($ip_addresses as $ip) {
    echo $ip . "\n";
}