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HomeBackend DevelopmentPHP Tutorialphp使用新浪微博API开发用户授权功能

新浪微博API开发的资源比较多,新浪微博提供了一个开发者的平台,它里面有很全面的新浪微博开发的资料,包括开发者的使用和介绍,各种语言的API函数介绍文档,SDK等多种资料。

首先,在新浪微博开放平台下载基于PHP的SDK开发包,将下载包放到开发环境中并解压,在其中也包含了demo演示程序,可以参考其样例程序进行编写。

新浪微博API开发最重要的用户授权过程

1.首先,获取未授权的Request Token 

<span style="font-family: 微软雅黑,Microsoft YaHei;"> $o = new WeiboOAuth( WB_AKEY , WB_SKEY ); <br/>$keys = $o->getRequestToken(); <br/>//echo($keys[&#39;oauth_token&#39;].&#39; : &#39;.$keys[&#39;oauth_token_secret&#39;]);</span>

需要在新浪微博开放平台中注册一个帐号,或直接使用新浪微博帐号登录,进入应用,然后按照提示创建属于自己的第三方应用,创建完成之后可以得到两个授权的App Key和App Secret值,这两个值就是开发应用的关键。 
得到授权值后,就可以利用上面的代码获得未授权的Request Token值了,它们会保存在$key数组变量中。

2.请求用户授权Token 

<span style="font-family: 微软雅黑,Microsoft YaHei;">$_SESSION[&#39;keys&#39;] = $keys; <br/>aurl = $o->getAuthorizeURL( $keys[&#39;oauth_token&#39;] ,false , &#39;http://localhost/callback.php&#39;);</span>

得到未授权的Request Token值后,就利用上面的代码可以开始准备去新浪微博授权页面进行授权,$aurl就是授权链接页面,得到$aurl后就可以利用header()直接跳转到该授权页面,然后用户输入新浪微博帐号和密码进行授权,授权完成后,自动跳回你在最后一个参数里面设置的回调页面:http://localhost/callback.php,该链接你可以设置为上一个页面,这样授权完成之后就会自动又跳转回去了。

注意:设置session的keys的值是必须的,它在下面获取到授权的Access Token中是需要用到的。很多的朋友可能会参考其开放平台上面的说明来进行授权时,可发现总是出错,一般都是这个问题,你并未设置session的keys值,在下面当然取不到Access Token的值了,这个一定要记住了。

3.得到用户授权的Access Token 

<span style="font-family: 微软雅黑,Microsoft YaHei;"><?php<br/>$o = new WeiboOAuth( WB_AKEY , <br/>WB_SKEY , <br/>$_SESSION[&#39;keys&#39;][&#39;oauth_token&#39;] , <br/>$_SESSION[&#39;keys&#39;][&#39;oauth_token_secret&#39;] ); <br/>$last_key = $o->getAccessToken( $_REQUEST[&#39;oauth_verifier&#39;] ) ; <br/>echo($last_key[&#39;oauth_token&#39;]); </span>

以上代码,最终获得了用户授权的Access Token,共两个值,它们保存在$last_key数组变量里面,也可以看到,后面的两个参数就是前面设置的session值。到此就基本完成了,这就是新浪微博用户授权的一个完整的过程。

授权完成后的工作

在授权完成之后,就可以开始调用新浪微博提供的各类API函数接口进行实际应用的开发了,在这里对获取最新微博记录这个接口作下简单说明,其他都类似。 
获取最新新浪微博信息的API接口函数是:public_timeline(),样例代码看下面: 

<span style="font-family: 微软雅黑,Microsoft YaHei;"> <?php<br/>//获取前20条最新更新的公共微博消息 <br/>$c = new WeiboClient( WB_AKEY , <br/>WB_SKEY , <br/>$oauth_token , <br/>$oauth_token_secret ); <br/>$msg = $c->public_timeline(); <br/>if ($msg === false || $msg === null){ <br/>echo "Error occured"; <br/>return false; <br/>} <br/>if (isset($msg[&#39;error_code&#39;]) && isset($msg[&#39;error&#39;])){ <br/>echo (&#39;Error_code: &#39;.$msg[&#39;error_code&#39;].&#39;; Error: &#39;.$msg[&#39;error&#39;] ); <br/>return false; <br/>} <br/>print_r($msg);<br/></span>

通常在得到用户授权的Access Token值之后,就把它们保存在的用户表中,与的应用中的帐号进行对应,之后在调用新浪微博各api接口时就不用每次都去认证了。

实例化WeiboClient对象,然后直接调用接口函数public_timeline就可以得到返回的信息,如果没有错误的话。通常新浪微博api接口返回的数据格式一般为Json格式或xml格式,而在此是用php进行开发,则使用Json格式的数据就有先天的优势,如果返回Json格式数据的话,直接使用php函数json_decode()就可以转换为php常用的array数组格式了。

更多相关教程请访问   php编程从入门到精通全套视频教程

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