我正在尝试构建一个允许用户通过表单输入员工编号的页面,当他们点击"删除"按钮时,它将删除相应的记录.数据库名为"Crosshill",表名为"Employees",我想要使用的字段是"employeeid".
它似乎可以很好地连接到数据库,但下面的代码不起作用.当您点击"删除"按钮时,它会返回以下错误:
无法删除数据:SQL语法中有错误; 查看与您的MySQL服务器版本对应的手册,以便在第1行的"WHERE employeeid ="附近使用正确的语法BlockQuote
<html>
<head>
<title>Delete an Employee</title>
</head>
<body>
<h3>Enter the Employee Number below to delete a record</h3>
<?php
if(isset($_POST['delete']))
{
$dbhost = '####';
$dbuser = '####';
$dbpass = '####';
$conn = mysql_connect($dbhost, $dbuser, $dbpass);
if(! $conn )
{
die('Could not connect: ' . mysql_error());
}
$employeeid = $_POST['employeeid'];
$sql = "DELETE Employees ".
"WHERE employeeid = $employeeid" ;
mysql_select_db('Crosshill');
$retval = mysql_query( $sql, $conn );
if(! $retval )
{
die('Could not delete data: ' . mysql_error());
}
echo "Deleted data successfully\n";
mysql_close($conn);
}
else
{
?>
<form method="post" action="<?php $_PHP_SELF ?>">
<table width="400" border="0" cellspacing="1" cellpadding="2">
<tr>
<td width="100">Employee ID</td>
<td><input name="employeeid" type="number" id="employeeid"></td>
</tr>
<tr>
<td width="100"> </td>
<td> </td>
</tr>
<tr>
<td width="100"> </td>
<td>
<input name="delete" type="submit" id="delete" value="Delete">
</td>
</tr>
</table>
</form>
<?php
}
?>
</html>