更新日期字段时为空 - MySQL PHP

Question

I'm trying to update date field in my db. Query like this:

$q = "update news set data = STR_TO_DATE('2011-03-05','%Y-%m-%d'), title = '".$title."', content='".$content."',....";

works great, but:

$q = "update news set data = STR_TO_DATE('".$data."','%Y-%m-%d'), title = '".$title."', content='"...";

it is not working :(

I got date:

$data = $_POST["data"];

and it has a value "2013-04-13". I trimmed date and show in popup window and value is correct; Plz help :)

UPDATE It is strange to me, but if i'm using:

$q = "insert into news set data = CAST('".$data."' AS DATE), title = '".$title."', content='".$content."'...";

it works perfectly fine. Only in insert not in update

Script for table:

CREATE TABLE IF NOT EXISTS `news` (`id` int(11) NOT NULL AUTO_INCREMENT, `data` date NOT NULL, `title` text NOT NULL, `content` text NOT NULL, `img` text NOT NULL, `n_img` text NOT NULL, PRIMARY KEY (`id`), KEY `id` (`id`)) ENGINE=MyISAM  DEFAULT CHARSET=utf8 AUTO_INCREMENT=36 ;

Answer 1

why are you using STR_TO_DATE? looks like your date is already in the correct format. try removing it and just inserting as is?

might want to escape it first though.

$data = mysql_real_escape_string($_POST["data"]);