php test ftp connection

php test ftp connection script is as follows:

<?php
    $host = "xxx.xxx.xxx.xxx";
    $user = "username";
    $pwd = "password";
    $port = "21"; 
    $conn   = @ftp_connect($host, $port) ;

    if($conn == false) {
        echo "conn fail!";
    } else {
        echo "conn success!";
    }

    $login = @ftp_login($conn, $user, $pwd);
    if(empty($login)) {
        echo "login fail!";
    } else {
        echo "login success!";
    }
?>

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