Question

我有一个搜索查询，可以在表格中返回结果 - 如果没有结果，则返回文本无结果

然而，表格就像单元格中没有值一样？

Screenshot of table

根据搜索，该表具有不同的行数。

为什么要这样做？

编辑：这是php文件的完整代码

<?php
mysql_connect("x", "x", "x") or die("Error connecting to database: ".mysql_error());

mysql_select_db("x") or die(mysql_error());
?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Search results</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="style.css"/>
</head>
<body>
<?php
$query = $_GET['query'];

$min_length = 0;

if(strlen($query) >= $min_length){ // if query length is more or equal minimum length then

    $query = htmlspecialchars($query); 

    $query = mysql_real_escape_string($query);

    $raw_results = mysql_query("SELECT s.*
 , t.*
  FROM PalletSpaces s
  JOIN ProductTrans t
   ON s.PalletSpaceID = t.PalletSpace
 WHERE t.ProductName LIKE '%$query%' OR s.PalletSpace LIKE '%$query%';") or die(mysql_error());

    if(mysql_num_rows($raw_results) > 0){ // if one or more rows are returned do following

        echo "<table border='1'>
    <tr>
    <th>Product Code</th>
    <th>Pallet Space</th>
    <th>Quantity</th>
    <th>Date</th>
    </tr>";

    while($row = mysql_fetch_array($raw_results))
    {
    echo "<tr>";
    echo "<td>" . $row['t.ProductName'] . "</td>";
    echo "<td>" . $row['s.PalletSpace'] . "</td>";
    echo "<td>" . $row['t.Quantity'] . "</td>";
    echo "<td>" . $row['t.TransactionDate'] . "</td>";
    echo "</tr>";
    }
    echo "</table>";

    }
    else{ // if there is no matching rows do following
        echo "No results";
    }

}
else{ // if query length is less than minimum
    echo "Minimum length is ".$min_length;
}
?>
</body>
</html>

Answer 1

试试这个。

<?
    while($row = mysql_fetch_array($raw_results))
    {
        echo "<tr>";
        echo "<td>" . $row['ProductName'] . "</td>";
        echo "<td>" . $row['PalletSpace'] . "</td>";
        echo "<td>" . $row['Quantity'] . "</td>";
        echo "<td>" . $row['TransactionDate'] . "</td>";
        echo "</tr>";
    }
?>

如果出现问题，数组索引使用小写。

Answer 2

将您的查询更改为：

SELECT  (t.ProductName) as Pname ,(s.PalletSpace) as PSpace,(t.Quantity) as Qty,(t.TransactionDate) as Transac
  FROM PalletSpaces s
  JOIN ProductTrans t
   ON s.PalletSpaceID = t.PalletSpace
 WHERE t.ProductName LIKE '%$query%' OR s.PalletSpace LIKE '%$query%';

然后更改字段名称，例如与SQL Query中的别名匹配。

while($row = mysql_fetch_array($raw_results))
{
echo "<tr>";
echo "<td>" . $row['Pname'] . "</td>";
echo "<td>" . $row['PSpace'] . "</td>";
echo "<td>" . $row['Qty'] . "</td>";
echo "<td>" . $row['Transac'] . "</td>";
echo "</tr>";
}

Answer 3

请优化您的查询：


    SELECT 
       t.ProductName     as tProductName, 
       t.Quantity        as tQuantity, 
       t.TransactionDate as tTransactionDate, 
       s.PalletSpace     as sPalletSpace
    FROM PalletSpaces s
      JOIN ProductTrans t
      ON s.PalletSpaceID = t.PalletSpace
    WHERE t.ProductName LIKE '%$query%' OR s.PalletSpace LIKE '%$query%'

请遵循此伪代码：



$results = mysql_query( $sql, $connectionObject );
if ($results){ //some results are returned from query.
   echo "<table>
           <tr>
             <th>Product Code</th>
             ...
          </tr>";
   while($row = mysql_fetch_array($raw_results)) {
     echo "<tr>";
     echo "  <td>" . $row['tProductName'] . "</td>";
     echo "  <td>" . $row['sPalletSpace'] . "</td>";
     echo "  <td>" . $row['tQuantity'] . "</td>";
     echo "  <td>" . $row['tTransactionDate'] . "</td>";
     echo "</tr>";
   }
   echo "</table>";
}else{  //no results returned from query.
   echo "No Results";
}

$results = mysql_query( $sql, $connectionObject ); if ($results){ //some results are returned from query. echo "<table> <tr> <th>Product Code</th> ... </tr>"; while($row = mysql_fetch_array($raw_results)) { echo "<tr>"; echo " <td>" . $row['tProductName'] . "</td>"; echo " <td>" . $row['sPalletSpace'] . "</td>"; echo " <td>" . $row['tQuantity'] . "</td>"; echo " <td>" . $row['tTransactionDate'] . "</td>"; echo "</tr>"; } echo "</table>"; }else{ //no results returned from query. echo "No Results"; }
希望，您将从上面的代码中获得核心思想。

HTML表设置为0px？

3 个答案: