How to communicate data between two wordpresses

First of all, find the data table prefix of the main station. It must be that station A is established first, and then the second station B is established. Station B wants to share the users of station A, then Open the wp_config.php file of station B, and then insert the following code:

define('CUSTOM_USER_TABLE', 'wp_users');
define('CUSTOM_USER_META_TABLE', 'wp_usermeta');

This place must be copied directly to avoid character errors. Copy it to a location with the same format, and then the data users will be common, but use A When logging in to Station B with your website account, you will see this prompt:

Related recommendations: "WordPress Tutorial"

This requires two steps , the first step is to execute the following statement in phpmyadmin:

INSERT INTO `dbname`.`wp_usermeta` (`umeta_id`, `user_id`, `meta_key`, `meta_value`) VALUES 
(NULL, '1', 'wpen_capabilities', 'a:1:{s:13:"administrator";s:1:"1";}');

The second step is to make a plug-in, the specific code is as follows:

<?php
/**
* @package user
* @version 1.6
*/
/*
Plugin Name: userdb
Description: 解决多wp网站用户共享，大杭州虹雅居原创插件，by:然子.
Version: 1.6
Author URI: https://www.jinshare.cn/
*/
//设置主站的前缀，其它网站都共享该网站的用户数据表
//添加功能到用户注册的钩子里
$main_prefix = &#39;wp_&#39;;
//设置子站的前缀，例如有两个子站，前缀分别为wpen_和wpcn_
$addi_prefixs = array(&#39;as_&#39;);
//添加功能到用户注册的钩子里
add_action( &#39;user_register&#39;, &#39;dup_capabilities&#39; );
function dup_capabilities( $user_id ) {
global $main_prefix, $addi_prefixs;
//获取该用户权限的值，因为不同角色的值是不同的
if( $cap_val = get_user_meta( $user_id, $main_prefix.&#39;capabilities&#39;, true ) ) {
if( count( $addi_prefixs ) > 0 ) {
foreach( $addi_prefixs as $prefix ) {
add_user_meta( $user_id, $prefix.&#39;capabilities&#39;, $cap_val, true );
}
}
}
}
?>

Completely copy and save as userdb.php and then upload the plug-in directory Just enable it.

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