我想选择PHP代码中的数据,并从mysql数据库中选择数据,然后选定的数据将被删除!这是我的一般想法。从选定菜单中删除数据库中的数据
我写的代码,第一个代码是从数据库打印数据,以允许用户选择数据,这是第一次代码:
<form method="POST" action="deleteacc.php" name='monitor' id='monitor'>
<select name="drivers"><option>Please Select the sensor id that you want to delete :</option>
<?php
$uid=$_SESSION['uid'];
$dbName = "senior"; //Database name
$db = mysql_connect ("localhost","root","hahaha1") or die("Unable To Connect "); //Connect to database
$test= mysql_select_db ($dbName,$db) or die("Unable to select database"); //Test Connection
$result=mysql_query("SELECT * FROM accelerometer ");
while ($row=mysql_fetch_array($result))
{
$sid = $row['sid'];
$x=$row['x'];
$y=$row['y'];
$z=$row['z'];
$date=$row['date'];
$time=$row['time'];
echo "<option name=$sid' value='$sid'> Device ID: $sid</option>";
}
mysql_close($db);
?>
</select></center>
<br>
<center> <input type="submit" value= " Monitor " name="submit" ><br /><br /> </center>
</form>
我的第二个代码删除所选数据:
<?php
$dbh=mysql_connect("localhost", "root", "hahaha1") or die (mysql_error());
mysql_select_db ("senior");
extract($_POST);
$mySql="DELETE FROM accelerometer WHERE sid=$drivers";
mysql_query($mySql) or die (mysql_error());
echo "<h2> User info was deleted successfully</h2>";
echo "<h3>To go back to adminstration control click <a href='member.php'>Here!</a> or to delete another accelerometer value click <a href='deleteacc2.php'>Here!</a></h3>";
mysql_close($dbh);
?>
我的问题是,当我从菜单中选择数据并按下监视器显示,我这个错误:
Unknown column 'bedoor' in 'where clause'
关于如何解决我的问题的任何想法,请?
也许你delte SQL语句是由$驱动变量损坏。尝试消除有问题的字符,在删除查询之前编写以下语句:'$ driver = addslashes($ driver);' – Muatik
我试过你说的错误显示给我:致命错误:调用未定义的函数addlslahes()在C:\ AppServ \ www \ senior \ deleteacc.php在线61 –
对不起,有一个错字。我刚刚纠正了它。看看这个:http://php.net/addslashes并根据ROY的答案更改你的代码。 – Muatik