我从数据库中提取记录,并创建一个PHP文件,然后按下“删除”按钮时执行。代码的工作原理是它从数据库中删除记录,但它总是删除数据库中的第一条记录,而不是与表中与请求ID相关的记录。任何帮助将是巨大的PHP - MySQL删除记录
表:
<?php
//3. Perform database query
$result = mysql_query("SELECT * FROM Request
WHERE DepID = 'CO'
AND Status = 'P'", $connection);
if(!$result){
die("Database query failed: " . mysql_error());
}
//4. Use Returned Data
while ($row = mysql_fetch_array($result)) {
$row['ReqID'];
echo "<tr>";
echo "<td class='req' align='center'>".$row['ReqID']."</td>";
echo "<td class='req' align='center'>".$row['ModTitle']."</td>";
echo "<td class='req' align='center'>".$row['BuildingID']."</td>";
echo "<td class='req' align='center'>".$row['RoomID']."</td>";
echo "<td class='req' align='center'>".$row['Priority']."</td>";
echo "<td class='req' align='center'>".$row['W1']."</td>";
echo "<td class='req' align='center'>".$row['P1']."</td>";
echo "<td class='req' align='center'><a href=''><img height='18px' src='images/edit.png'></a></td>";
echo "<td class='req' align='center'><a href='deletereq.php'><img src='images/exit.png'></a></td>";
echo "</tr>";
}
?>
然后这是deletereq.php文件:
<?php require_once("includes/connection.php"); ?>
<?php
//3. Perform database query
$result = mysql_query("SELECT * FROM Request
WHERE DepID = 'CO'
AND Status = 'P'", $connection);
if(!$result){
die("Database query failed: " . mysql_error());
}
//4. Use Returned Data
while ($row = mysql_fetch_array($result)) {
$row['ReqID'];
$result2 = mysql_query("DELETE FROM Request
WHERE ReqID = {$row['ReqID']} LIMIT 1", $connection);
if (mysql_affected_rows() == 1) {
redirect_to("content.php");
} else {
//deletion failed
echo "<h1>Request Deletion Failed.</h1>";
echo "<p>" . mysql_error() . "</p>";
echo "<a href=\"request.php\"> Return to request</a>";
}
}
?>
<?php mysql_close($connection); ?>
您认为$ row ['ReqID']的值是您的删除查询的位置? – 2012-02-24 02:47:36
记录唯一ID的值来自sql数据库 – ScottD 2012-02-24 02:49:16
嗯没关系。那么我不明白为什么你会惊讶它删除了第一行。你的第一个代码需要传递你想删除的id的请求到第二个页面。这不是那样做的。 – 2012-02-24 02:53:03