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$.ajax({
type: "POST",
url: "../login_chk.php",
dataType: "text",
data:{"user":user,"pwd":pwd},
beforeSend: function(){
$("#login_error").html("登录中,请稍候...");
},
success: function(data){
alert(data);
if(data == "1"){
$("#login_error").html(user + "欢迎回来!");
window.location.href='login.php';
}else {
$("#login_error").html("用户名或密码错误!");
return false;
}
},
error: function(e){
alert(e);
}
});
<?php
require_once 'db.php';
session_start();
$user = isset($_POST["username"]) ? $_POST["username"] : $_GET["user"];
$pwd = isset($_POST["password"]) ? $_POST["password"] : $_GET["pwd"];
$sql="select * from user where username='{$user}' and password='{$pwd}'";
$result = $db->query($sql);
if($result && $row=$result->fetch_assoc()){
echo '1';
$_SESSION["uid"]=$row["uid"];
$_SESSION["username"]=$row["username"];
}
$result->free_result;
$db->close;
?>