数据未插入MySQL数据库

Question

I have my table setup as shown in the image below.

When I try and run the following code to insert the values into the database I get the error:

FAIL: INSERT INTO Betfairodds ( Horse , Back , Lay , TimeformTR )VALUES( 'Intrepid','5.5', '5.9', '0')

Would anyone be able to help, as I have tried to debug the code.

//loop through each individual card
    foreach ($getdropdown2 as $dropresults) {

 $horse = preg_replace('/\h*[^ a-zA-Z].*$/m', '', trim($dropresults->childNodes->item(8)->textContent));
 $back =  trim(GetBetween($dropresults->childNodes->item(18)->textContent, 'Back', '£'));
 $lay =  trim(GetBetween($dropresults->childNodes->item(20)->textContent, 'Lay', '£'));

    $sql = "INSERT INTO `Betfairodds` (`Horse`,`Back`,`Lay`,`TimeformTR`)VALUES( '$horse','$back', '$lay', '0')";
    $res = mysqli_query($db, $sql);
        if (!$res) {

            echo PHP_EOL . "FAIL: $sql";
                 trigger_error(mysqli_error($db), E_USER_ERROR);

        }

}

Answer 1

我从0删除了引号' ，因为它在架构中定义为int ，并且当然在VALUES之前添加了空格。

$sql = "INSERT INTO `Betfairodds` (`Horse`,`Back`,`Lay`,`TimeformTR`) VALUES( '$horse','$back', '$lay', 0)";

Answer 2

Your statement is wrong. You should not put single quotes on the data fields. so it should be like:

$sql = "INSERT INTO `Betfairodds` (Horse,Back,Lay,TimeformTR)VALUES( '$horse','$back', '$lay', '0')";