virtmart的搜索功能

Question

如果在创建此页面时出现错误，请您告诉我一下吗？ 我想为virtuemart做搜索组件，我使用一个php文件，我写了整个代码。我想使用数组变量send2 []和添加新的选择选项为$ compare2变量添加新条件。请问您有什么建议吗？我不是专家。谢谢

<?php

       $con=mysqli_connect("","","","");
    // Check connection
    if (mysqli_connect_errno())
      {
      echo "Failed to connect to MySQL: " . mysqli_connect_error();
      }

     if (isset($_POST['Submit'])) {
       $compare1 = $_POST['send1'];
       ?>
       ?>
       <table border="1" cellspacing="2" cellpadding="2">
       <?php
       for ($i=0; $i<sizeof($compare1);$i++) {

       $result = mysqli_query($con,"SELECT * FROM auto_virtuemart_products WHERE '$compare1[$i]' LIKE product_sku");
       ?>


       <?php
       while($row = mysqli_fetch_array($result))
      {
      ?>
      <tr>
      <td>
      <?php echo $row['product_sku'];?>
      </td>
      <td>
      <?php echo $row['product_weight'];?>
      </td>
      </tr>

      <?php
      }

       }
       ?>

       </table>
       <?php
       echo "<input type='button' value='spat' onclick=location.href=''>";
        }

    else
    {

    ?>


    <table border="1" cellspacing="2" cellpadding="2">


    <?php
    $result = mysqli_query($con,"SELECT * FROM auto_virtuemart_products");

    while($row = mysqli_fetch_array($result)) {
    ?>

    <select>
    <option><?php echo $row['product_sku']; ?></option>
    </select>
    <form method="post">
    <input type="checkbox" name="send2" value="<?php echo $row['product_sku'] ?>" />

    <?php
    }
    ?>

    </table>
    <input type="Submit" name="Submit2" value="Vyber"/></form>

    <table border="1" cellspacing="2" cellpadding="2">


    <?php

     if (isset($_POST['Submit2'])) {
       $compare2 = $_POST['send2'];

    $result = mysqli_query($con,"SELECT * FROM auto_virtuemart_products WHERE '$compare2' LIKE product_sku");

    while($row = mysqli_fetch_array($result)) {
    ?>

    <tr>
    <td>
    <font face="Arial, Helvetica, sans-serif"><?php echo $row['product_sku']; ?></font>
    </td>
    <td>
    <font face="Arial, Helvetica, sans-serif"><?php echo $row['product_weight']; ?></font>
    </td>
    <td>
    <form method="post">
    <input type="checkbox" name="send1[]" value="<?php echo $row['product_sku'] ?>" />

    </td>
    </tr>



    <?php
    }
     }

     else
     {
        echo "Empty";

     }
    mysqli_close($con);
    ?>

    </table>
    <input type="Submit" name="Submit" value="Submit"/></form>

    <?php
    }
    ?>