php mySQL返回一個空查詢

Question

我正在嘗試創建一個“計費歷史記錄”頁面，用戶可以在其中查看具有表格格式購買歷史的表格。 我正在嘗試向每行添加一個鏈接，以便用戶可以看到每個訂單的完整發票詳細信息。

當他們單擊鏈接時（我已經在此腳本之后包括了概述頁面的腳本），該腳本應該執行查詢，但我只是得到一個空消息查詢。

誰能發現錯誤？

謝謝！！

歐仁妮

<?php

include("mainfile.php");
include(XOOPS_ROOT_PATH."/header.php");


$host="localhost"; // Host name 
$username="user"; // Mysql username 
$password="pass"; // Mysql password 
$db_name="db"; // Database name 
$tbl_name="table"; // Table name

// Connect to server and select database.
mysql_connect("$host", "$username", "$password")or die("cannot connect"); 
mysql_select_db("$db_name")or die("cannot select DB");

// get value of id that sent from address bar
$TicketID=$_GET['TicketID'];

// Retrieve data from database 
$sql="SELECT * FROM $tbl_name WHERE TicketID='$TicketID'";
$result=mysql_query($sql);
$rows=mysql_fetch_array($result);


// Get a specific result from the "example" table
$result = mysql_query($Sql) or die(mysql_error());


echo "<table width='100' border='1' cellpadding='0' cellspacing='0' id='records'>";
print "<h3 align='center'><strong>Billing History</strong></h3><p>";
echo "<tr>  
<th width='110' align='center'>Billing Date</th>
<th width='80' align='center'>Ticket #</th>  
<th align='center'>Project Title </th>
<th width='80' align='center'>Total GBP</th>



</tr>";
// keeps getting the next row until there are no more to get
while($row = mysql_fetch_array( $result )) {
// Print out the contents of each row into a table
echo "<tr height='22' width='100' bordercolor='343434' align='center'><td>"; 
echo $row['date'];
echo "</td><td> "; 
echo $row['TicketID'];

echo "</td><td> "; 
echo $row['project'];
echo "</td><td> "; 
echo $row['grandTotal'];


} 

echo "</table>";

include(XOOPS_ROOT_PATH."/footer.php");

?>

這是一個腳本，它顯示完整的計費歷史記錄，並且包含與執行查詢的腳本的鏈接（上述）。

<?php

include("mainfile.php");
include(XOOPS_ROOT_PATH."/header.php");


$host="localhost"; // Host name 
$username="username"; // Mysql username 
$password="password"; // Mysql password 
$db_name="db name"; // Database name 
$tbl_name="tbl name"; // Table name 

// Connect to server and select database.
mysql_connect("$host", "$username", "$password")or die("cannot connect"); 
mysql_select_db("$db_name")or die("cannot select DB");

$sql="SELECT * FROM $tbl_name  WHERE uid='";
$sql=$sql .  $xoopsUser->uid("s") . "'  AND Paid='Y'";


$result=mysql_query($sql);
?>

<table width="400" border="0" cellspacing="1" cellpadding="0">
<tr>
<td>
<table width="400" border="1" cellspacing="0" cellpadding="3">
<tr>
<td colspan="4"><strong>List data from mysql </strong> </td>
</tr>

<tr>
<td align="center"><strong>Billing Date</strong></td>
<td align="center"><strong>Invoice Number</strong></td>
<td align="center"><strong>Description</strong></td>
<td align="center"><strong>Total GBP</strong></td>
<td align="center"><strong>View</strong></td>
</tr>

<?php
while($rows=mysql_fetch_array($result)){
?>

<tr>
<td><? echo $rows['date']; ?></td>
<td><? echo $rows['TicketID']; ?></td>
<td><? echo $rows['project']; ?></td>
<td><? echo $rows['grandTotal']; ?></td>


<td align="center"><a href="http://website.co.uk/site/viewInvoice.php?TicketID=<? echo     $rows['TicketID']; ?>">View</a></td>
</tr>

<?php
}
?>

</table>
</td>
</tr>
</table>

<?php
mysql_close();
include(XOOPS_ROOT_PATH."/footer.php");
?>    

Answer 1

改變這個：

// Get a specific result from the "example" table
$result = mysql_query($Sql) or die(mysql_error());

對此：

$result = mysql_query($sql) or die(mysql_error());

在viewInvoice.php中，還可以查看其他人關於安全性等的評論。

Answer 2

檢查這些行：

// Retrieve data from database 
$sql="SELECT * FROM $tbl_name WHERE TicketID='$TicketID'";
$result=mysql_query($sql);
$rows=mysql_fetch_array($result);

// Get a specific result from the "example" table
$result = mysql_query($Sql) or die(mysql_error());

您正在用mysql_query的返回值覆蓋$result變量，該返回值獲取了不存在的參數： $Sql

PHP變量名稱區分大小寫！

Answer 3

改變這個

<a href="http://website.co.uk/site/viewInvoice.php?TicketID=<? echo $rows['TicketID']; ?>">View</a></td>

對此

<?php 
echo "href=http://website.co.uk/site/viewInvoice.php?TicketID=" . $rows['TicketID'] . ">View</a>";
?>

Answer 4

<?php

include("mainfile.php");
include(XOOPS_ROOT_PATH."/header.php");


$host="localhost"; // Host name 
$username="user"; // Mysql username 
$password="pass"; // Mysql password 
$db_name="db"; // Database name 
$tbl_name="table"; // Table name

mysql_connect($host, $username, $password)or die("cannot connect"); 
mysql_select_db($db_name)or die("cannot select DB");

// get value of id that sent from address bar
$TicketID=$_GET['TicketID'];

// Retrieve data from database 
$sql="SELECT * FROM ' ".$tbl_name."'  WHERE `TicketID`='".$TicketID."'";
$result  = mysql_query($sql);



echo "<table width='100' border='1' cellpadding='0' cellspacing='0' id='records'>";
print "<h3 align='center'><strong>Billing History</strong></h3><p>";
echo "<tr>  
<th width='110' align='center'>Billing Date</th>
<th width='80' align='center'>Ticket #</th>  
<th align='center'>Project Title </th>
<th width='80' align='center'>Total GBP</th></tr>";
// keeps getting the next row until there are no more to get
while ($row = mysql_fetch_array($result)) {
    // Print out the contents of each row into a table
    echo "<tr height='22' width='100' bordercolor='343434' align='center'><td>"; 
    echo $row['date'];
    echo "</td><td> "; 
    echo $row['TicketID'];

    echo "</td><td> "; 
    echo $row['project'];
    echo "</td><td> "; 
    echo $row['grandTotal'];
} 

echo "</table>";

include(XOOPS_ROOT_PATH."/footer.php");

?>

第二個腳本：

<?php

include("mainfile.php");
include(XOOPS_ROOT_PATH."/header.php");


$host="localhost"; // Host name 
$username="username"; // Mysql username 
$password="password"; // Mysql password 
$db_name="db name"; // Database name 
$tbl_name="tbl name"; // Table name 

// Connect to server and select database.
mysql_connect($host, $username, $password)or die("cannot connect"); 
mysql_select_db($db_name)or die("cannot select DB");

$sql="SELECT * FROM `".$tbl_name."`  WHERE `uid`='".$xoopsUser->uid("s"). "'  AND `Paid`='Y'";
$result=mysql_query($sql);
?>

<table width="400" border="0" cellspacing="1" cellpadding="0">
<tr>
<td>
<table width="400" border="1" cellspacing="0" cellpadding="3">
<tr>
<td colspan="4"><strong>List data from mysql </strong> </td>
</tr>

<tr>
<td align="center"><strong>Billing Date</strong></td>
<td align="center"><strong>Invoice Number</strong></td>
<td align="center"><strong>Description</strong></td>
<td align="center"><strong>Total GBP</strong></td>
<td align="center"><strong>View</strong></td>
</tr>

<?php
while($rows=mysql_fetch_array($result)){
?>

<tr>
<td><? echo $rows['date']; ?></td>
<td><? echo $rows['TicketID']; ?></td>
<td><? echo $rows['project']; ?></td>
<td><? echo $rows['grandTotal']; ?></td>


<td align="center"><a href="http://website.co.uk/site/viewInvoice.php?TicketID=<? echo $rows['TicketID']; ?>">View</a></td>
</tr>

<?php
}
?>

</table>
</td>
</tr>
</table>

<?php
mysql_close();
include(XOOPS_ROOT_PATH."/footer.php");
?> 

對不起 愚蠢的我。 試試看..