Question

I have trouble with date data type.
I have a php mysql pdo statement:

$mystmt = $mydb->prepare("
    SELECT  `ad_id` 
        FROM `tbl_actions`
        WHERE 
            (`actiondate` > :nowcookietime  )
");
$mystmt->execute(array(
            ':nowcookietime'=>date("Y-m-d H:i:s", time()-$cookiedurationlock),
           )
);
$testnotinsql = $mystmt->fetch(PDO::FETCH_ASSOC); // EMPTY

The code run return empty. But if i get the sql below from general_log and run in sql tool (HeidiSQL), it will return record.
SQL from general_log:

SELECT  ad_id 
        FROM tbl_actions
        WHERE 
            (actiondate> '2012-08-24 17:53:21' ) 

My PHP timezone is UTC+7
Mysql is SYSTEM (which UTC)
As I understand it’s not timezone problem if insert and query in php using same timezone.

I test the bind parameter with force string

':nowcookietime'=>date("Y-m-d H:i:s", time()-$cookiedurationlock),

but it’s same empty.

BUT: if use quote then it return rows

':nowcookietime'=>"'".date("Y-m-d H:i:s", time()-$cookiedurationlock)."'",

Can you clarify what wrong with this statement as I understand we dont need quote, mysql pdo quote for us.

EDIT 1:

I update the correct sql. With quote in sql is my mistake when take from test. The without quote around :nowcookietime stil empty.

CLOSED
See my answer below.

Answer 1

I find out why.

1. Basicly there’s script set the $cookiedurationlock too short, so most the time it empty.
2. When add quote, the comparation will be (actiondate > ‘\’2012-08-25 02:28:22\” ), so it will return rows.
3. After the query, there is a insert new action row. So when i run trace sql from tools, data was change and it return the new one which added after this sql.

I think I have to organize my script to simpler ones.
Thanks all for your help.