PHP not inserting data into db

Question

I set up an HTML with a form that would send the information over to a PHP page. Then the PHP would run through it and send it to my DB. I set it the database up in cPanel. I have another part to the code that searches for the item and that works. I just don't get why the query statement in this isn't pulling the information.

The error that I get is "An error has occurred. The item was not added." which I have set up after the query line. I can't seem to figure out why.

Here is the code:

html:

  <form action="insert_product.php" method="post">
    <table border="0">
      <tr>
        <td>ShoeName</td>
         <td><input type="text" name="ShoeName" maxlength="13" size="13"></td>
      </tr>
      <tr>
        <td>Price</td>
        <td> <input type="text" name="Price" maxlength="7" size="7"></td>
      </tr>
      <tr>
        <td>ProductID</td>
        <td> <input type="text" name="ProductID" maxlength="7" size="7"></td>
      </tr>
      <tr>
        <td>Size</td>
        <td><input type="text" name="Size" maxlength="7" size="7"></td>
      </tr>
      <tr>
        <td>ShoeType</td>
        <td><input type="text" name="ShoeType" maxlength="7" size="7"></td>
      </tr>
      <tr>
        <td>Brand</td>
        <td><input type="text" name="Brand" maxlength="7" size="7"></td>
      </tr>
      <tr>
        <td>Color</td>
        <td><input type="text" name="Color" maxlength="7" size="7"></td>
      </tr>
      <tr>
        <td>Rating</td>
        <td><input type="text" name="Rating" maxlength="7" size="7"></td>
      </tr>
      <tr>
        <td>Description</td>
        <td><input type="text" name="Description" maxlength="40" size="40"></td>
      </tr>
      <tr>
        <td>ImageName</td>
        <td><input type="text" name="ImageName" maxlength="7" size="7"></td>
      </tr>
      <tr>
        <td>StockAmount</td>
        <td><input type="text" name="StockAmount" maxlength="7" size="7"></td>
      </tr>
      <tr>
        <td colspan="2"><input type="submit" value="Register"></td>
      </tr>
    </table>

php:

<?php
  // create short variable names
  $ShoeName=$_POST['ShoeName'];
  $Price=$_POST['Price'];
  $ProductID=$_POST['ProductID'];
  $Size=$_POST['Size'];
  $ShoeType=$_POST['ShoeType'];
  $Brand=$_POST['Brand'];
  $Color=$_POST['Color'];
  $Rating=$_POST['Rating'];
  $Description=$_POST['Description'];
  $ImageName=$_POST['ImageName'];
  $StockAmount=$_POST['StockAmount'];

  if (!$ShoeName || !$Price || !$ProductID || !$Size || !$ShoeType || !$Brand || !$Color || !$Rating || !$Description || !$ImageName || !$StockAmount) {
     echo "You have not entered all the required details.<br />"
          ."Please go back and try again.";
     exit;
  }

  if (!get_magic_quotes_gpc()) {
    $ShoeName = addslashes($ShoeName);
    $Price = doubleval($Price);
    $ProductID = addslashes($ProductID);
    $Size = addslashes($Size);
    $ShoeType = addslashes($ShoeType);
    $Brand = addslashes($Brand);
    $Color = addslashes($Color);
    $Rating = doubleval($Rating);
    $Description = addslashes($Description);
    $ImageName = addslashes($ImageName);
    $StockAmount = doubleval($StockAmount);
  }

  @ $db = new mysqli('localhost', 'admin', '(pass)', 'KicksUnlimited');

  if (mysqli_connect_errno()) {
     echo "Error: Could not connect to database.  Please try again later.";
     exit;
  }

  $query = "INSERT INTO product".'(ShoeName, Price, ProductID, Size, ShoeType, Brand, Color, Rating, Description, ImageName, StockAmount)'."values
            ('".$ShoeName."', '".$Price."', '".$ProductID."', '".$Size."', '".$ShoeType."', '".$Brand."', '".$Color."', '".$Rating."', '".$Description."', '".$ImageName."', '".$StockAmount."')";
  $result = $db->query($query);

  if ($result) {
      echo  $db->affected_rows." shoe inserted into database.";
  } else {
      echo "An error has occurred.  The item was not added.";
  }

  $db->close();
?>

Answer 1

Test:

1. type query in cpanel with values not variable.
   
2. Use print $ShoeName=$_POST['ShoeName']; in front of every $_POST[] and on the end print exit; It is to control that value coming from Form.
   
3. Comment all between variables $_POST[] and INSERT INTO .....
   
4. Control quote. It is mess of quote, double, single, it does not need. And control if it is need quote around every values.
   

Sorry, I have not time to do all that for to find for sure error.
Do it yourself because it is the best way of learning.