DATETIME另存为0000-00-00 00:00:00

Question

This is my sql code ive ran this same code a good amount of times and never had any issues with it but today or some reason it is.

mysqli_query($con, "
    INSERT INTO 'u_visits'
        ('ip_adress','dates')
    VALUES
        ('$ip',now())
    ON DUPLICATE KEY UPDATE visits = visits + 1
");
mysqli_close($con);

Everything works fine except my dates row gets added as 0000-00-00 00:00:00

here is how i get the ip adress:

//Test if it is a shared client
if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
    $ip = $_SERVER['HTTP_CLIENT_IP'];
    //Is it a proxy address
} elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
    $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
} else {
    $ip = $_SERVER['REMOTE_ADDR'];
}

$ip = ip2long($ip);

Answer 1

How about something like:

INSERT INTO `u_visits` (`ip_address`,`dates`) 
VALUES (
        '$ip', CONCAT(CURDATE(), ' ', CURTIME() )
       )
       ON DUPLICATE KEY UPDATE visits = visits +1

You should look into bound parameters for correct SQL injection prevention, as you are wide open as it stands.

Personally, I think your query is failing because your use of string dilemas ' instead of assigning table names/column names as a table using backticks (`). So MySQL might be trying to iterate the necessary names as strings instead of table names/columns

Answer 2

Try explicitly SETting:

  INSERT INTO 'u_visits' SET ip_adress = '$ip', dates=NOW() ON ...

Also, as someone else mentioned, be absolutely sure $ip has been properly checked, otherwise you're subjecting yourself to SQL injection attacks.