<meta charset="utf-8">
<?php
require_once('db_config.php');
session_start();
if (isset($_POST['ok'])) {
# code...
$name = $_POST['name'];
$pwd = md5($_POST['pwd']);
// 这地方要进行防止SQL注入攻击的功能
$query_string = "select * from user where name='$name' and password='$pwd'";
$rs = mysqli_query($link,$query_string);
if (mysqli_num_rows($rs)==1) {
# code...
// echo "welcome";
$_SESSION['user_name']=$name;
// echo "<a href='list_2.php'>用户列表</a><br>";
//如果需要登录成功后跳转到指定页面,比如:后台,则在跳转语句前不能有任何输出语句
header("location:list_2.php");
} else {
# code...
echo "用户名或密码错误<br>";
}
} else {
# code...
}
?>
<form action="" method="post">
账户:<input type="text" id="name" name="name" value=""><br>
密码:<input type="password" id="pwd" name="pwd" value=""><br>
<input type="submit" id="ok" name="ok" value="ok">
</form>
第五讲登录
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转载自blog.csdn.net/qq_42836388/article/details/103453072
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