多站點內容更新，使用匯入匯出的方式。
1.外掛 Select Post Export
可以選擇post、page 匯出 xml 檔案。
2.匯入 xml 檔案，更新既有內容。
原本的wordpress匯入功能，是不能覆蓋更新既有的post、page 。 要開啟更新功能，在 function.php
加入下列code
<?php
/**
* When using the WordPress Importer, update existing
* posts instead of skipping them. Updates content according
* to the import file even if the existing post was updated
* more recently.
*
* To use, drop this file into your /mu-plugins/ folder or
* copy this code into your functions.php file.
*/
class WPImporterUpdate {
protected $existing_post;
function __construct() {
add_filter( 'wp_import_existing_post', [ $this, 'wp_import_existing_post' ], 10, 2 );
add_filter( 'wp_import_post_data_processed', [ $this, 'wp_import_post_data_processed' ], 10, 2 );
}
function wp_import_existing_post( $post_id, $post ) {
if ( $this->existing_post = $post_id ) {
$post_id = 0; // force the post to be imported
}
return $post_id;
}
function wp_import_post_data_processed( $postdata, $post ) {
if ( $this->existing_post ) {
// update the existing post
$postdata['ID'] = $this->existing_post;
}
return $postdata;
}
}
new WPImporterUpdate;