以admin(管理员表单)身份登录时,继续错误:管理员登录。客户不还有一个表(db_table_customers)。
编辑:使用Wamp,它给了我这个
( ! ) Warning: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in C:\wamp\www\dev6\login.php on line 36
Call Stack
# Time Memory Function Location
1 0.0003 692264 {main}( ) ..\login.php:0
2 0.0121 710400 mysqli_num_rows ( ) ..\login.php:36
第36行是$rows = mysqli_num_rows($result);
另外,var_dump()ing $ result和$ row分别在Web浏览器中打印以下内容:
布尔值假
空
这应该意味着login.php与我在db_table_admins表中提供的admin登录名不匹配。但我正在为管理员提供正确的登录信息。多次检查。
表格
<form name="admin_login" method="POST" action="login.php">
<h3>Admin:</h3>
Username: <input type="text" id="username" name="admin_login[username]"><br>
Password: <input type="password" id="password" name="admin_login[password]"><br>
<input type="submit" name="admin_submit" value="Login">
</form>
<form name="customer_login" method="POST" action="login.php">
<h3>Customer:</h3>
Username: <input type="text" id="username" name="customer_login[username]"><br>
Password: <input type="password" id="password" name="customer_login[password]"><br>
<input type="submit" name="customer_submit" value="Login">
</form>
的login.php
<?php
require('connection.inc.php');
$username = null;
$password = null;
$administrator = false;
$result = null;
$link = mysqli_connect($db_host, $db_username, $db_password, $db_database) or die("Can't connect");
if(isset($_POST['admin_submit'])){
$administrator = true;
$username = $_POST['admin_login']['username'];
$passname = $_POST['admin_login']['password'];
}else{
$username = $_POST['customer_login']['username'];
$passname = $_POST['customer_login']['password'];
}
if($administrator){
$query = "SELECT * FROM $db_table_admins WHERE username='$username' AND password='$password'";
$result = mysqli_query($link, $query);
$rows = mysqli_num_rows($result);
if($rows == 1){
$_SESSION['admin'] = true;
header("location:login_success.php");
}else{
echo "Error: admin login";
}
}else{
$query = "SELECT * FROM $db_table_customers WHERE username='$username' AND password='$password'";
$result = mysqli_query($link, $query);
$rows = mysqli_num_rows($result);
if($rows == 1){
$_SESSION['admin'] = false;
header("location:login_success.php");
}else{
echo "Error: customer login";
}
}
?>
答案 0 :(得分:0)
您有$administrator = true;
但是您正在测试if($admin){
答案 1 :(得分:0)
您的管理员登录按钮名为admin_submit
:
<input type="submit" name="admin_submit" value="Login">
但在您的代码中,您需要检查admin_login
:
if($_POST['admin_login']){
您需要检查(并更改为...)admin_submit
,因为admin_login
已用于您的文字字段
编辑:正如所指出的,你有一个SQL注入问题。这意味着,例如'
中的$_POST
字符会破坏您的查询。
除此之外,您似乎正在为表名使用变量;这些来自哪里?是什么?