Bdtjtk

$add     = "example.com";

$result = checkdnsrr($add, "MX"); 

var_dump($result);

$add     = "example.com";

$result = checkdnsrr($add, "MX"); 

var_dump($result);

$add     = "example.com";

$result = checkdnsrr($add, "MX"); 

var_dump($result);

$add     = "example.com";

$result = checkdnsrr($add, "MX"); 

var_dump($result);

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$add     = "example.com";

$result = false;

if($fp = fsockopen($add, 80, $errno, $errstr, 10)){

    fclose($fp);

    $result = true;

}

var_dump($result);

function ping($host, $timeout = 1) {

            /* ICMP ping packet with a pre-calculated checksum */

            $package = "x08x00x7dx4bx00x00x00x00PingHost";

            $socket  = socket_create(AF_INET, SOCK_RAW, 1);

            socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO, array('sec' => $timeout, 'usec' => 0));

            socket_connect($socket, $host, null);



            $ts = microtime(true);

            socket_send($socket, $package, strLen($package), 0);

            if (socket_read($socket, 255))

                    $result = microtime(true) - $ts;

            else    $result = false;

            socket_close($socket);



            return $result;

}



$present = ping('192.168.0.100');

$add     = "example.com";

$result = false;

if($fp = fsockopen($add, 80, $errno, $errstr, 10)){

    fclose($fp);

    $result = true;

}

var_dump($result);

function ping($host, $timeout = 1) {

            /* ICMP ping packet with a pre-calculated checksum */

            $package = "x08x00x7dx4bx00x00x00x00PingHost";

            $socket  = socket_create(AF_INET, SOCK_RAW, 1);

            socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO, array('sec' => $timeout, 'usec' => 0));

            socket_connect($socket, $host, null);



            $ts = microtime(true);

            socket_send($socket, $package, strLen($package), 0);

            if (socket_read($socket, 255))

                    $result = microtime(true) - $ts;

            else    $result = false;

            socket_close($socket);



            return $result;

}



$present = ping('192.168.0.100');

$add     = "example.com";

$result = false;

if($fp = fsockopen($add, 80, $errno, $errstr, 10)){

    fclose($fp);

    $result = true;

}

var_dump($result);

function ping($host, $timeout = 1) {

            /* ICMP ping packet with a pre-calculated checksum */

            $package = "x08x00x7dx4bx00x00x00x00PingHost";

            $socket  = socket_create(AF_INET, SOCK_RAW, 1);

            socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO, array('sec' => $timeout, 'usec' => 0));

            socket_connect($socket, $host, null);



            $ts = microtime(true);

            socket_send($socket, $package, strLen($package), 0);

            if (socket_read($socket, 255))

                    $result = microtime(true) - $ts;

            else    $result = false;

            socket_close($socket);



            return $result;

}



$present = ping('192.168.0.100');

$add     = "example.com";

$result = false;

if($fp = fsockopen($add, 80, $errno, $errstr, 10)){

    fclose($fp);

    $result = true;

}

var_dump($result);

function ping($host, $timeout = 1) {

            /* ICMP ping packet with a pre-calculated checksum */

            $package = "x08x00x7dx4bx00x00x00x00PingHost";

            $socket  = socket_create(AF_INET, SOCK_RAW, 1);

            socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO, array('sec' => $timeout, 'usec' => 0));

            socket_connect($socket, $host, null);



            $ts = microtime(true);

            socket_send($socket, $package, strLen($package), 0);

            if (socket_read($socket, 255))

                    $result = microtime(true) - $ts;

            else    $result = false;

            socket_close($socket);



            return $result;

}



$present = ping('192.168.0.100');

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