I wanna insert record to MySQL but it returns error :
check the manual that corresponds to your MySQL server version for the right syntax to use near '07:28:29)' at line 1
I use PHP for connecting to database. here is what i write :
$id = 353567452;
$firstname = "My_name";
$username = "@myusername";
$message_date = "2017-01-01 17:29:20";
$sql_check = "SELECT id, firstname, username, register_date FROM RJ_userino WHERE id=" . "$chat_id AND firstname=$firstname AND username=$username AND register_date=$message_date";
$sql_insert = "INSERT INTO RJ_userinfo (id, firstname, username, register_date) VALUES (" . "$chat_id, $firstname, $username, $message_date)";
$check = $db_req->query($sql_check);
if ($check->num_rows == 0){
$db_req->query($sql_insert);
}
where is the problem ?