更新查询不更新表

Question

I am executing an update query in my script. It's returning true but the update query does not update the table. Here is the query. What i'm missing here?

$connection = db::factory('mysql');
$query='update bookings SET date="'.$date.'",time_from="'.$time_from.'",time_to="'.$time_to.'",status="'.$status.'" where booker_id="'.$booker_id.'"';
if(mysql_query($query)) {
   echo "success"; exit;
   return true;
} else {
   echo "fail"; exit;
   return false;
}

Here is the table structure

CREATE TABLE IF NOT EXISTS `bookings` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `date` date NOT NULL,
  `time_from` time NOT NULL,
  `time_to` time NOT NULL,
  `status` varchar(250) NOT NULL,
  `booker_id` int(11) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=latin1 AUTO_INCREMENT=20 ;

Answer 1

Try this :

 $query='update `bookings` SET `date`="'.$date.'",`time_from`="'.$time_from.'",`time_to`="'.$time_to.'",`status`="'.$status.'" where `booker_id`="'.$booker_id.'"';


    $rs = mysql_query($query) or die(mysql_error());

    if($rs) {
       echo "success"; exit;
       return true;
    } else {
       echo "fail"; exit;
       return false;
    }

Hope it will help

Answer 2

和`直到列名的直到字段名称和日期一样，直到字段是列的数据类型，并且在MySQL中保留键使用以下命令：

$query='update `bookings` SET `date`="'.$date.'",`time_from`="'.$time_from.'",`time_to`="'.$time_to.'",`status`="'.$status.'" where `booker_id`="'.$booker_id.'"';

Answer 3

It returns true because there was no error.
But Mysql didn't find any entry to update, because none is corresponding to your conditions.
You should return the whole query to check it, and try to execute it by hand with phpMyAdmin.
+1 for the ` around the date column.

Answer 4

what is the value of $booker_id , as i suspect that it is updating successfully but not actually matching the records. print out $query and see exactly what is being sent to the db

Answer 5

mysql_query() just returns true since the query run successfully. I would recommend to get the number of rows updated/modified to check whether this query updated any row or not. So use mysql_affected_rows() immediately after executing update query. Note: mysql_* queries are depricated, So Try to use any of PDO , mysqli