我试图通过 php 脚本从数据库中删除信息，但出现错误。
当我们输入员工ID时，该ID应该被删除。但是，它不会删除，并且出现错误。
<html>
<head>
<title>Delete a Record from MySQL Database</title>
</head>
<body>
<?php
if (isset($_POST['delete'])) {
$dbhost = 'localhost';
$dbuser = 'root';
$dbpass = '';
$conn = mysql_connect($dbhost, $dbuser, $dbpass);
if (!$conn) {
die('Could not connect: ' . mysql_error());
}
$emp_id = $_POST['emp_id'];
$sql = "DELETE employee " .
"WHERE emp_id = $emp_id";
mysql_select_db('test');
$retval = mysql_query($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="emp_id" type="text" id="emp_id"></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 } ?>
</body>
我得到的错误是:
Could not delete data: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE emp_id = 1' at line 1
最佳答案
正确的语法在这里:http://dev.mysql.com/doc/refman/5.0/en/delete.html
您需要说删除
$sql = "DELETE **from** employee ".
"WHERE emp_id = $emp_id" ;
关于php - 通过 php 删除数据库中的数据时出错，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/18393728/