使用PHPRPC实现Ajax安全登录第1/2页
PHPRPC 与其它 ajax 框架不同,PHPRPC 遵循的是“只做一件事,并把它做好”的原则。它只负责数据传输,并且将传输做到最好!它将你以前用传统的 ajax 方式做不到或者很难做到的事情变得轻而易举!
相信好多人选择 PHPRPC 的一个主要原因就是它能够让你开发 ajax 应用变得更加容易!尽管 PHPRPC 的强大之处不仅限于此,但我不得不承认,这确实是 PHPRPC 的一大亮点!
所以,我们的第一站,就来看看如何用 PHPRPC 3.0 来编写 ajax 应用吧。
下 面我们举一个最简单的例子(甚至可以算是无聊的例子 :mrgreen: )来说明如何使用 PHPRPC 3.0 编写 ajax 应用。这个例子很好的说明了上面所提到的 MVC 模式如何具体的工作。这里我们先以 PHP 为服务器端的情况为例来说明。我们的第一个例子很简单,客户端输入一段字符串,然后服务器端计算出它的 SHA1 值。
复制代码 代码如下:
require_once("../php/phprpc_server.php");
$server = new PHPRPC_Server();
$server->add("sha1");
$server->start();
?>
只有这么简单的 4 行代码,就把 PHP 内置的 sha1 函数发布了。现在,客户端可以直接使用这个函数了。
复制代码 代码如下:
这个例子非常简单,并且跟 PHPRPC 有关的只有两条语句,一条是:
复制代码 代码如下:
var rpc = new PHPRPC_Client('sha1.php', ['sha1']);
这条语句用来创建一个 PHPRPC_Client 对象,第一个参数是服务器地址,这里可以用相对路径,也可以用绝对路径。
而且这个路径可以跨域!因此你可以做跨域的应用!
第二个参数是你需要使用的服务器端的函数名列表,所以,虽然我们这里只有一个函数,也要写成数组的形式。这样我们就有了一个可以调用服务器端方法的客户端对象了。
那该如何调用呢?我们来看第二条关于 PHPRPC 的语句:
复制代码 代码如下:
rpc.sha1(input, showResult);
这条语句相当简单,你会发现我们直接使用了服务器端发布的函数名作为 rpc 对象的一个方法来调用。它的第一个参数就是 sha1 函数的参数值。第二个参数是个函数,这个是回调函数,也就是说,当服务器端方法执行完之后就会自动调用这个函数来完成结果的处理。它是在前面定义的,你会 发现它有一个参数 result,这个参数就是我们的远程过程 sha1 的返回值,它是通过回调函数的这个参数传入的。

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