【iOS】继注册后，iOS登录，PHP后台

写完注册，继续把登录也写了吧，例子知识简单介绍，实际开发应更加严谨

- (IBAction)loginClick:(id)sender
{
    NSString *user = [self.username.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
    NSString *pass = [self.password.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
    if(![user isEqualToString:@""]){
        NSDictionary *par = @{@"username":user,@"password":pass};
        [[netTool shareDL]postDataFromUrlString:@"http://192.168.1.102/myphp/login.php" parameter:par progress:^(NSProgress * _Nonnull downloadProgress) {
            
        } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
            NSLog(@"成功：%@",responseObject);
        } fail:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
            NSLog(@"请求失败");
        }];
    }
}

$username = $_POST['username'];
$password = $_POST['password'];
$mysqli = new mysqli("127.0.0.1","root","","demo");
if($mysqli->connect_error){
    echo "连接失败".$mysqli->connect_error;
}
$mysqli->query("set names utf8");
$sql = "select * from myuser where username='$username' and password='$password'";
$res = $mysqli->query($sql);
if($res->num_rows){
    $result = array();
    $result['code'] = "1";
    $result['des'] = "登陆成功";
    $result['list'] = array();
    while ($row=$res->fetch_assoc()) {
        $list = array();
        foreach ($row as $key => $val) {
            $list[$key] = $val;
        }
        array_push($result['list'],$list);
    }
    echo json_encode($result);
}else{
    $result=array();
    $result['code']="-1";
    $result['des']="登录失败";
    echo json_encode($result);
}

login.gif