wp_autoupdate.php 将是一个外部文件（在插件中），包含下面定义的自动更新类update.php 是用于检查更新的外部“远程”文件，创建APIadd_action( \'init\', \'wptuts_activate_au\' );
function wptuts_activate_au()
{
require_once (\'wp_autoupdate.php\'); // File which contains the Class below
$wptuts_plugin_current_version = \'1.0\';
$wptuts_plugin_remote_path = \'http://localhost/update.php\';
$wptuts_plugin_slug = plugin_basename(__FILE__);
new wp_auto_update( $wptuts_plugin_current_version, $wptuts_plugin_remote_path, $wptuts_plugin_slug );
}
Autoupdate Class - wp_autoupdate.php
class wp_auto_update
{
/**
* The plugin current version
* @var string
*/
public $current_version;
/**
* The plugin remote update path
* @var string
*/
public $update_path;
/**
* Plugin Slug (plugin_directory/plugin_file.php)
* @var string
*/
public $plugin_slug;
/**
* Plugin name (plugin_file)
* @var string
*/
public $slug;
/**
* Initialize a new instance of the WordPress Auto-Update class
* @param string $current_version
* @param string $update_path
* @param string $plugin_slug
*/
function __construct( $current_version, $update_path, $plugin_slug )
{
// Set the class public variables
$this->current_version = $current_version;
$this->update_path = $update_path;
$this->plugin_slug = $plugin_slug;
list ($t1, $t2) = explode(\'/\', $plugin_slug);
$this->slug = str_replace( \'.php\', \'\', $t2 );
// define the alternative API for updating checking
add_filter( \'pre_set_site_transient_update_plugins\', array( &$this, \'check_update\' ) );
// Define the alternative response for information checking
add_filter(\'plugins_api\', array(&$this, \'check_info\'), 10, 3);
}
/**
* Add our self-hosted autoupdate plugin to the filter transient
*
* @param $transient
* @return object $ transient
*/
public function check_update( $transient )
{
if( empty( $transient->checked ) ) {
return $transient;
}
// Get the remote version
$remote_version = $this->getRemote_version();
// If a newer version is available, add the update
if ( version_compare( $this->current_version, $remote_version, \'<\' ) ) {
$obj = new stdClass();
$obj->slug = $this->slug;
$obj->new_version = $remote_version;
$obj->url = $this->update_path;
$obj->package = $this->update_path;
$transient->response[$this->plugin_slug] = $obj;
}
var_dump( $transient );
return $transient;
}
/**
* Add our self-hosted description to the filter
*
* @param boolean $false
* @param array $action
* @param object $arg
* @return bool|object
*/
public function check_info( $false, $action, $arg )
{
if( $arg->slug === $this->slug ) {
$information = $this->getRemote_information();
return $information;
}
return false;
}
/**
* Return the remote version
* @return string $remote_version
*/
public function getRemote_version()
{
$request = wp_remote_post( $this->update_path, array( \'body\' => array( \'action\' => \'version\' ) ) );
if( ! is_wp_error( $request ) || wp_remote_retrieve_response_code( $request ) === 200 ) {
return $request[\'body\'];
}
return false;
}
/**
* Get information about the remote version
* @return bool|object
*/
public function getRemote_information()
{
$request = wp_remote_post( $this->update_path, array( \'body\' => array( \'action\' => \'info\' ) ) );
if( ! is_wp_error( $request ) || wp_remote_retrieve_response_code( $request ) === 200) {
return unserialize( $request[\'body\'] );
}
return false;
}
/**
* Return the status of the plugin licensing
* @return boolean $remote_license
*/
public function getRemote_license()
{
$request = wp_remote_post( $this->update_path, array( \'body\' => array( \'action\' => \'license\' ) ) );
if( ! is_wp_error( $request ) || wp_remote_retrieve_response_code( $request ) === 200 ) {
return $request[\'body\'];
}
return false;
}
}
Remote ( External ) Update API - update.php
if( isset( $_POST[\'action\'] ) ) {
switch( $_POST[\'action\'] ) {
case \'version\':
echo \'1.1\';
break;
case \'info\':
$obj = new stdClass();
$obj->slug = \'plugin.php\';
$obj->plugin_name = \'plugin.php\';
$obj->new_version = \'1.1\';
$obj->requires = \'3.0\';
$obj->tested = \'3.3.1\';
$obj->downloaded = 12540;
$obj->last_updated = \'2012-01-12\';
$obj->sections = array(
\'description\' => \'The new version of the Auto-Update plugin\',
\'another_section\' => \'This is another section\',
\'changelog\' => \'Some new features\'
);
$obj->download_link = \'http://localhost/update.php\';
echo serialize( $obj );
case \'license\':
echo \'false\';
break;
}
} else {
header( \'Cache-Control: public\' );
header( \'Content-Description: File Transfer\' );
header( \'Content-Type: application/zip\' );
readfile( \'update.zip\' );
}
<小时>update.php 将在插件上保留最新信息。使用init 函数，您可以传递当前安装的版本，以便它可以将其发布到update.php 并对照电流进行检查。代码还有一些改进的空间，可以使其更加精简，但我使用它来完成您想要做的事情，所以这是一个很好的切入点。