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PHP实现微博的同步发送

Jun 13, 2016 am 09:43 AM
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导读:在设计博客类站点时,有时会需要在发布文章时同步发布在微博上。本文阐述了实现该功能的基本方式。



  准备工作   作为新浪微博的开发者,需要有身份验证; 个人身份认证的审核,一般一个工作日; 接着是提交网站的审核,境内的就是提交备案号。境外的提交所在网站的境外证明即可;也是一个工作日左右; 通过个人身份审核之后,就可以创建应用、调用接口了,这时得到的权限相对低点; 网站不提交审核或未通过审核,对发微博没有影响;只是在发的微博下面会显示"未审核应用"; 审核之后显示的为网站应用名称:image  

调用接口   微博开放平台提供了测试工具; 在开发接入之前,首先得保证通过这个测试工具能将测试微博发出去; http://open.weibo.com/tools/console?uri=statuses/update&httpmethod=POST&key1=status&value1=%E5%BE%AE%E5%8D%9A%E6%9D%A5%E8%87%AAAPI%E6%B5%8B%E8%AF%95%E5%B7%A5%E5%85%B7   发微博的api参考文档为: http://open.weibo.com/wiki/2/statuses/update   所有发微博的接口都需要权限认证;认证通过之后会得到一个access_token(访问密钥);密钥的有效期根据用户等级的不同而有所区别; 未通过web审核的为1天;审核通过的普通用户为7天; 在有效期内,不用再与新浪服务器交互来进行权限认证,只要本地保存有这个token,就可以用来调用各种微博api(读、写、获取听众信息等)  

权限认证   权限认证有三种方式:   通过用户名和密码; 这个最易懂,在程序中写好微博帐号的用户名和密码,通过api调用来认证;但需要注意的是这个接口是提供给开发app来使用的,web应用无法使用;   通过web回调方式; 需要与sina server交互,并提供回调地址;在回调地址中得到access_token;   第三种为code方式,未细看,略过; web应用只支持第二种授权方式;以下详细说明第二种方式的使用:   下载新浪提供的SDK,里面有demo和api封装类; http://open.weibo.com/wiki/SDK  

接入页面
  ==call.php========================
 
include_once(  'sina_config.php' ); include_once( 'saetv2.ex.class.php' );   //获取到授权的url $o = new SaeTOAuthV2( WB_AKEY , WB_SKEY  ); $code_url = $o->getAuthorizeURL( WB_CALLBACK_URL );   //post或get方式调用该url,取得授权;授权完成后,新浪会调用我们这边传过去的回调地址:WB_CALLBACK_URL  request()->redirect($code_url);


回调地址页面(WB_CALLBACK_URL):
===callback.php====================
$o = new SaeTOAuthV2( WB_AKEY , WB_SKEY ); if (isset($_REQUEST['code'])) {     $keys = array();     $keys['code'] = $_REQUEST['code'];     $keys['redirect_uri'] = WB_CALLBACK_URL;     try {         $token = $o->getAccessToken( 'code', $keys ) ;     } catch (OAuthException $e) {         echo "weibo.com get access token err.";         LOG_ERR("weibo.com get access token err.");         return ;     } }   if ($token) {     //取到授权后的api调用密钥,可用存起来,在有效期内多次调用api接口就不用再授权了     $_SESSION['token'] = $token;     $c = new SaeTClientV2( WB_AKEY , WB_SKEY , $_SESSION['token']['access_token'] );     $ret = $c->update( $weiboStr );    //发送微博     if ( isset($ret['error_code']) && $ret['error_code'] > 0 ) {         $str = "Weibo.com Send failed. err info:" . $ret['error_code'] . '/' . $ret['error'];         LOG_ERR($str);     } else {         LOG_INFO("Weibo.com Send Success.");     } }

  博客的摘要提取   微博的字数为140字;其中汉字为1个字;我们使用计数函数得有所选择;对一个汉字,strlen()算为3个字符,而多字节统计函数mb_strlen()算1个字,符合我们的使用要求; 最后在发的微博中需要清除html标记和& nbsp;等  
    //获取当前微博内容(140字)     public function getWeibo()     {         $titleLen = mb_strlen($this->title, 'UTF-8');                 //140字除去链接的20个字和省略符;剩115字左右,需要说明的是链接:无论文章的链接多长,在微博里都会被替换成短链接,按短链接的长度来计算字数;                 $summaryLen = 115 - $titleLen ;            $pubPaper = cutstr_html($this->summary);         if(mb_strlen($pubPaper, 'UTF-8')  >= $summaryLen)             $pubPaper = mb_substr($pubPaper,0,$summaryLen,'UTF-8');           $pubPaper = sprintf('【%s】%s...%s', $this->title , $pubPaper , aurl('post/show', array('id' => $this->id)));           return $pubPaper;     }   //完全的去除html标记 function cutstr_html($string) {     $string = strip_tags($string);     $string = preg_replace ('/n/is', '', $string);     $string = preg_replace ('/ | /is', '', $string);     $string = preg_replace ('/ /is', '', $string);       return $string; }
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