PHP远程操纵WordPress的方法(流程剖析）-CFANZ编程社区

一直想写一个给wordpress群发文章的应用，这样我就能自动采集文章，然后写个脚本自动发送文章了，哈哈。虽然用python干这种事情貌似更加擅长，但是我想做个web界面访问该应用，而python的虚拟主机现在还好少（至少PHP真的很容易有），于是拿起老本行，用PHP来搞定。

学PHP也已经有很长时间，从原来的纯手工编写，到后来的网上找类库自己整合，再到如今的直接使用框架。我再也不愿意从头开始写程序，现成的框架有大量的优秀代码，拿来用能实现目标何乐而不为，之前也用过zend、thinkphp、codeigniter，前两者其实都不错，但是现在我还是很偏爱codeigniter，就因为它强大的在线文档。

我使用的是CI(codeigniter)的“XML-RPC 和 XML-RPC 服务器类”，以下代码实现了将服务器wordpress站点的标签信息获取下来打印：

	public function index ( ) { //加载CI的xmlrpc类库 $ this -> load -> library ( 'xmlrpc' ) ; //设定远程的XMLRPC.php文件的地址 $ this -> xmlrpc -> server ( 'http://jobrule.sinaapp.com/xmlrpc.php' ) ; /* * 设定需要操作的方法，该字符串，可以在wordpress服务器上 * 的/wp-includes/class-wp-xmlrpc-server.php里面找到 / $ this -> xmlrpc -> method ( 'wp.getTags' ) ; / * 设定请求参数，可以直接去看class-wp-xmlrpc-server.php的源代码， * 其中第0个是id，第一个和第二个是用户名密码 */ $ request = array ( '' , 'admin' , '123456789' ) ; //将参数设定到请求里面，这时候还没有发送请求 $ this -> xmlrpc -> request ( $ request ) ; //发送请求 if ( ! $ this -> xmlrpc -> send_request ( ) ) { echo $ this -> xmlrpc -> display_error ( ) ; } //打印结果看一看 echo "<pre>" ; print_r ( $ this -> xmlrpc -> display_response ( ) ) ; echo "</pre>" ; //$this->load->view('welcome_message'); }

public                   function                   index         (         )         {

             //加载CI的xmlrpc类库

             $         this         ->         load         ->         library         (         'xmlrpc'         )         ;

             //设定远程的XMLRPC.php文件的地址

             $         this         ->         xmlrpc         ->         server         (         'http://jobrule.sinaapp.com/xmlrpc.php'         )         ;

             /*

     * 设定需要操作的方法，该字符串，可以在wordpress服务器上

     * 的/wp-includes/class-wp-xmlrpc-server.php里面找到

     */

             $         this         ->         xmlrpc         ->         method         (         'wp.getTags'         )         ;

             /*

     * 设定请求参数，可以直接去看class-wp-xmlrpc-server.php的源代码，

     * 其中第0个是id，第一个和第二个是用户名密码

     */

             $         request                   =                   array         (         ''         ,         'admin'         ,                   '123456789'         )         ;

             //将参数设定到请求里面，这时候还没有发送请求

             $         this         ->         xmlrpc         ->         request         (         $         request         )         ;

             //发送请求

             if                   (                   !                   $         this         ->         xmlrpc         ->         send_request         (         )         )         {

                 echo                   $         this         ->         xmlrpc         ->         display_error         (         )         ;

             }

             //打印结果看一看

             echo                   "<pre>"         ;

             print_r         (                   $         this         ->         xmlrpc         ->         display_response         (         )         )         ;

             echo                   "</pre>"         ;

             //$this->load->view('welcome_message');

}

CI的官方文档列出了xmlrpc类的API：

$this->xmlrpc->server()：设定发送请求的服务器URL和端口号
$this->xmlrpc->timeout()：设定一个发送请求的响应时间
$this->xmlrpc->method()：设定请求的服务方法字符串（重要）
$this->xmlrpc->request()：绑定发送请求的数据参数，并不发送请求
$this->xmlrpc->send_request()：发送请求
$this->xmlrpc->display_error()：打印错误信息
$this->xmlrpc->display_response()：打印返回的响应信息
$this->xmlrpc->set_debug(TRUE)：开发过程中打印一些调试信息

关键在于$this->xmlrpc->method()，该接口设定向服务器发送什么样的请求。下载一个wordpress源码，打开\wp-includes\class-wp-xmlrpc-server.php文件，可以看到所有的我们能够调用的服务：

	// WordPress API 'wp.getUsersBlogs' = > 'this:wp_getUsersBlogs' , 'wp.newPost' = > 'this:wp_newPost' , 'wp.editPost' = > 'this:wp_editPost' , 'wp.deletePost' = > 'this:wp_deletePost' , 'wp.getPost' = > 'this:wp_getPost' , 'wp.getPosts' = > 'this:wp_getPosts' , 'wp.newTerm' = > 'this:wp_newTerm' , 'wp.editTerm' = > 'this:wp_editTerm' , 'wp.deleteTerm' = > 'this:wp_deleteTerm' , 'wp.getTerm' = > 'this:wp_getTerm' , 'wp.getTerms' = > 'this:wp_getTerms' , 'wp.getTaxonomy' = > 'this:wp_getTaxonomy' , 'wp.getTaxonomies' = > 'this:wp_getTaxonomies' , 'wp.getPage' = > 'this:wp_getPage' , 'wp.getPages' = > 'this:wp_getPages' , 'wp.newPage' = > 'this:wp_newPage' , 'wp.deletePage' = > 'this:wp_deletePage' , 'wp.editPage' = > 'this:wp_editPage' , 'wp.getPageList' = > 'this:wp_getPageList' , 'wp.getAuthors' = > 'this:wp_getAuthors' , 'wp.getCategories' = > 'this:mw_getCategories' , // Alias 'wp.getTags' = > 'this:wp_getTags' , 'wp.newCategory' = > 'this:wp_newCategory' , 'wp.deleteCategory' = > 'this:wp_deleteCategory' , 'wp.suggestCategories' = > 'this:wp_suggestCategories' , 'wp.uploadFile' = > 'this:mw_newMediaObject' , // Alias 'wp.getCommentCount' = > 'this:wp_getCommentCount' , 'wp.getPostStatusList' = > 'this:wp_getPostStatusList' , 'wp.getPageStatusList' = > 'this:wp_getPageStatusList' , 'wp.getPageTemplates' = > 'this:wp_getPageTemplates' , 'wp.getOptions' = > 'this:wp_getOptions' , 'wp.setOptions' = > 'this:wp_setOptions' , 'wp.getComment' = > 'this:wp_getComment' , 'wp.getComments' = > 'this:wp_getComments' , 'wp.deleteComment' = > 'this:wp_deleteComment' , 'wp.editComment' = > 'this:wp_editComment' , 'wp.newComment' = > 'this:wp_newComment' , 'wp.getCommentStatusList' = > 'this:wp_getCommentStatusList' , 'wp.getMediaItem' = > 'this:wp_getMediaItem' , 'wp.getMediaLibrary' = > 'this:wp_getMediaLibrary' , 'wp.getPostFormats' = > 'this:wp_getPostFormats' , 'wp.getPostType' = > 'this:wp_getPostType' , 'wp.getPostTypes' = > 'this:wp_getPostTypes' , // Blogger API 'blogger.getUsersBlogs' = > 'this:blogger_getUsersBlogs' , 'blogger.getUserInfo' = > 'this:blogger_getUserInfo' , 'blogger.getPost' = > 'this:blogger_getPost' , 'blogger.getRecentPosts' = > 'this:blogger_getRecentPosts' , 'blogger.getTemplate' = > 'this:blogger_getTemplate' , 'blogger.setTemplate' = > 'this:blogger_setTemplate' , 'blogger.newPost' = > 'this:blogger_newPost' , 'blogger.editPost' = > 'this:blogger_editPost' , 'blogger.deletePost' = > 'this:blogger_deletePost' , // MetaWeblog API (with MT extensions to structs) 'metaWeblog.newPost' = > 'this:mw_newPost' , 'metaWeblog.editPost' = > 'this:mw_editPost' , 'metaWeblog.getPost' = > 'this:mw_getPost' , 'metaWeblog.getRecentPosts' = > 'this:mw_getRecentPosts' , 'metaWeblog.getCategories' = > 'this:mw_getCategories' , 'metaWeblog.newMediaObject' = > 'this:mw_newMediaObject' , // MetaWeblog API aliases for Blogger API // see http://www.xmlrpc.com/stories/storyReader$2460 'metaWeblog.deletePost' = > 'this:blogger_deletePost' , 'metaWeblog.getTemplate' = > 'this:blogger_getTemplate' , 'metaWeblog.setTemplate' = > 'this:blogger_setTemplate' , 'metaWeblog.getUsersBlogs' = > 'this:blogger_getUsersBlogs' , // MovableType API 'mt.getCategoryList' = > 'this:mt_getCategoryList' , 'mt.getRecentPostTitles' = > 'this:mt_getRecentPostTitles' , 'mt.getPostCategories' = > 'this:mt_getPostCategories' , 'mt.setPostCategories' = > 'this:mt_setPostCategories' , 'mt.supportedMethods' = > 'this:mt_supportedMethods' , 'mt.supportedTextFilters' = > 'this:mt_supportedTextFilters' , 'mt.getTrackbackPings' = > 'this:mt_getTrackbackPings' , 'mt.publishPost' = > 'this:mt_publishPost' , // PingBack 'pingback.ping' = > 'this:pingback_ping' , 'pingback.extensions.getPingbacks' = > 'this:pingback_extensions_getPingbacks' , 'demo.sayHello' = > 'this:sayHello' , 'demo.addTwoNumbers' = > 'this:addTwoNumbers'

// WordPress API

'wp.getUsersBlogs'                   =         >                   'this:wp_getUsersBlogs'         ,

'wp.newPost'                   =         >                   'this:wp_newPost'         ,

'wp.editPost'                   =         >                   'this:wp_editPost'         ,

'wp.deletePost'                   =         >                   'this:wp_deletePost'         ,

'wp.getPost'                   =         >                   'this:wp_getPost'         ,

'wp.getPosts'                   =         >                   'this:wp_getPosts'         ,

'wp.newTerm'                   =         >                   'this:wp_newTerm'         ,

'wp.editTerm'                   =         >                   'this:wp_editTerm'         ,

'wp.deleteTerm'                   =         >                   'this:wp_deleteTerm'         ,

'wp.getTerm'                   =         >                   'this:wp_getTerm'         ,

'wp.getTerms'                   =         >                   'this:wp_getTerms'         ,

'wp.getTaxonomy'                   =         >                   'this:wp_getTaxonomy'         ,

'wp.getTaxonomies'                   =         >                   'this:wp_getTaxonomies'         ,

'wp.getPage'                   =         >                   'this:wp_getPage'         ,

'wp.getPages'                   =         >                   'this:wp_getPages'         ,

'wp.newPage'                   =         >                   'this:wp_newPage'         ,

'wp.deletePage'                   =         >                   'this:wp_deletePage'         ,

'wp.editPage'                   =         >                   'this:wp_editPage'         ,

'wp.getPageList'                   =         >                   'this:wp_getPageList'         ,

'wp.getAuthors'                   =         >                   'this:wp_getAuthors'         ,

'wp.getCategories'                   =         >                   'this:mw_getCategories'         ,                   // Alias

'wp.getTags'                   =         >                   'this:wp_getTags'         ,

'wp.newCategory'                   =         >                   'this:wp_newCategory'         ,

'wp.deleteCategory'                   =         >                   'this:wp_deleteCategory'         ,

'wp.suggestCategories'                   =         >                   'this:wp_suggestCategories'         ,

'wp.uploadFile'                   =         >                   'this:mw_newMediaObject'         ,                   // Alias

'wp.getCommentCount'                   =         >                   'this:wp_getCommentCount'         ,

'wp.getPostStatusList'                   =         >                   'this:wp_getPostStatusList'         ,

'wp.getPageStatusList'                   =         >                   'this:wp_getPageStatusList'         ,

'wp.getPageTemplates'                   =         >                   'this:wp_getPageTemplates'         ,

'wp.getOptions'                   =         >                   'this:wp_getOptions'         ,

'wp.setOptions'                   =         >                   'this:wp_setOptions'         ,

'wp.getComment'                   =         >                   'this:wp_getComment'         ,

'wp.getComments'                   =         >                   'this:wp_getComments'         ,

'wp.deleteComment'                   =         >                   'this:wp_deleteComment'         ,

'wp.editComment'                   =         >                   'this:wp_editComment'         ,

'wp.newComment'                   =         >                   'this:wp_newComment'         ,

'wp.getCommentStatusList'                   =         >                   'this:wp_getCommentStatusList'         ,

'wp.getMediaItem'                   =         >                   'this:wp_getMediaItem'         ,

'wp.getMediaLibrary'                   =         >                   'this:wp_getMediaLibrary'         ,

'wp.getPostFormats'                       =         >                   'this:wp_getPostFormats'         ,

'wp.getPostType'                   =         >                   'this:wp_getPostType'         ,

'wp.getPostTypes'                   =         >                   'this:wp_getPostTypes'         ,

                  

// Blogger API

'blogger.getUsersBlogs'                   =         >                   'this:blogger_getUsersBlogs'         ,

'blogger.getUserInfo'                   =         >                   'this:blogger_getUserInfo'         ,

'blogger.getPost'                   =         >                   'this:blogger_getPost'         ,

'blogger.getRecentPosts'                   =         >                   'this:blogger_getRecentPosts'         ,

'blogger.getTemplate'                   =         >                   'this:blogger_getTemplate'         ,

'blogger.setTemplate'                   =         >                   'this:blogger_setTemplate'         ,

'blogger.newPost'                   =         >                   'this:blogger_newPost'         ,

'blogger.editPost'                   =         >                   'this:blogger_editPost'         ,

'blogger.deletePost'                   =         >                   'this:blogger_deletePost'         ,

                  

// MetaWeblog API (with MT extensions to structs)

'metaWeblog.newPost'                   =         >                   'this:mw_newPost'         ,

'metaWeblog.editPost'                   =         >                   'this:mw_editPost'         ,

'metaWeblog.getPost'                   =         >                   'this:mw_getPost'         ,

'metaWeblog.getRecentPosts'                   =         >                   'this:mw_getRecentPosts'         ,

'metaWeblog.getCategories'                   =         >                   'this:mw_getCategories'         ,

'metaWeblog.newMediaObject'                   =         >                   'this:mw_newMediaObject'         ,

                  

// MetaWeblog API aliases for Blogger API

// see http://www.xmlrpc.com/stories/storyReader$2460

'metaWeblog.deletePost'                   =         >                   'this:blogger_deletePost'         ,

'metaWeblog.getTemplate'                   =         >                   'this:blogger_getTemplate'         ,

'metaWeblog.setTemplate'                   =         >                   'this:blogger_setTemplate'         ,

'metaWeblog.getUsersBlogs'                   =         >                   'this:blogger_getUsersBlogs'         ,

                  

// MovableType API

'mt.getCategoryList'                   =         >                   'this:mt_getCategoryList'         ,

'mt.getRecentPostTitles'                   =         >                   'this:mt_getRecentPostTitles'         ,

'mt.getPostCategories'                   =         >                   'this:mt_getPostCategories'         ,

'mt.setPostCategories'                   =         >                   'this:mt_setPostCategories'         ,

'mt.supportedMethods'                   =         >                   'this:mt_supportedMethods'         ,

'mt.supportedTextFilters'                   =         >                   'this:mt_supportedTextFilters'         ,

'mt.getTrackbackPings'                   =         >                   'this:mt_getTrackbackPings'         ,

'mt.publishPost'                   =         >                   'this:mt_publishPost'         ,

                  

// PingBack

'pingback.ping'                   =         >                   'this:pingback_ping'         ,

'pingback.extensions.getPingbacks'                   =         >                   'this:pingback_extensions_getPingbacks'         ,

                  

'demo.sayHello'                   =         >                   'this:sayHello'         ,

'demo.addTwoNumbers'                   =         >                   'this:addTwoNumbers'

根据方法名字，很容易知道是什么意思。要知道某一个方法需要发送什么参数，直接找到该方法，方法的注释可以看出需要什么参数，比如发送文章的newpost方法，根据注释知道需要如下参数：

	/** * Create a new post for any registered post type. * * @since 3.4.0 * * @param array $args Method parameters. Contains: * - int $blog_id * - string $username * - string $password * - array $content_struct * $content_struct can contain: * - post_type (default: 'post') * - post_status (default: 'draft') * - post_title * - post_author * - post_exerpt * - post_content * - post_date_gmt \| post_date * - post_format * - post_password * - comment_status - can be 'open' \| 'closed' * - ping_status - can be 'open' \| 'closed' * - sticky * - post_thumbnail - ID of a media item to use as the post thumbnail/featured image * - custom_fields - array, with each element containing 'key' and 'value' * - terms - array, with taxonomy names as keys and arrays of term IDs as values * - terms_names - array, with taxonomy names as keys and arrays of term names as values * - enclosure * - any other fields supported by wp_insert_post() * @return string post_id */

/**

 * Create a new post for any registered post type.

 *

 * @since 3.4.0

 *

 * @param array $args Method parameters. Contains:

 *  - int     $blog_id

 *  - string  $username

 *  - string  $password

 *  - array   $content_struct

 *      $content_struct can contain:

 *      - post_type (default: 'post')

 *      - post_status (default: 'draft')

 *      - post_title

 *      - post_author

 *      - post_exerpt

 *      - post_content

 *      - post_date_gmt | post_date

 *      - post_format

 *      - post_password

 *      - comment_status - can be 'open' | 'closed'

 *      - ping_status - can be 'open' | 'closed'

 *      - sticky

 *      - post_thumbnail - ID of a media item to use as the post thumbnail/featured image

 *      - custom_fields - array, with each element containing 'key' and 'value'

 *      - terms - array, with taxonomy names as keys and arrays of term IDs as values

 *      - terms_names - array, with taxonomy names as keys and arrays of term names as values

 *      - enclosure

 *      - any other fields supported by wp_insert_post()

 * @return string post_id

 */

至此PHP远程操作wordpress的基本流程已经非常清晰，本文使用的是CI的xmlrpc类，网友可以自己网上随便找个开源类代替，他们的接口肯定大同小异。关键是弄懂了服务端提供了什么服务，直接调用就好了。