问多个wordpress安装，在wp-1中从wp-2获取数据

EN

$db_wp2_user = 'db_user'
$db_wp2_pwd = 'db_pass';
$db_wp2_db = 'db_name';
$db_wp2_host = 'localhost';
$wpdb_wp2 = new wpdb($db_wp2_user, $db_wp2_pwd, $db_wp2_db, $db_wp2_host);

//query
$wp2_latestposts = $wpdb_wp2->get_results("SELECT ID, post_title FROM $wpdb_wp2->posts WHERE post_status = 'publish' AND post_type = 'post' ");

foreach ($wp2_latestposts as $latestpost) {
  echo $latestpost->post_title."<br />";
}


$db_wp3_user = 'db_user'
$db_wp3_pwd = 'db_pass';
$db_wp3_db = 'db_name';
$db_wp3_host = 'localhost';
$wpdb_wp3 = new wpdb($db_wp3_user, $db_wp3_pwd, $db_wp3_db, $db_wp3_host);

//query
$wp3_latestposts = $wpdb_wp3->get_results("SELECT ID, post_title FROM $wpdb_wp3->posts WHERE post_status = 'publish' AND post_type = 'post' ");

foreach ($wp3_latestposts as $latestpost) {
  echo $latestpost->post_title."<br />";
}

$db_wp4_user = 'db_user'
$db_wp4_pwd = 'db_pass';
$db_wp4_db = 'db_name';
$db_wp4_host = 'localhost';
$wpdb_wp4 = new wpdb($db_wp4_user, $db_wp4_pwd, $db_wp4_db, $db_wp4_host);


//query
$wp4_latestposts = $wpdb_wp4->get_results("SELECT ID, post_title FROM $wpdb_wp4->posts WHERE post_status = 'publish' AND post_type = 'post' ");

foreach ($wp4_latestposts as $latestpost) {
  echo $latestpost->post_title."<br />";
}