WordPressのマルチサイト用のユーティリティ ブログパスからblog_id取得とか。サブディレクトリ用。

mu-blog-util.php

<?php

/*
Plugin Name: MU Blog Util
Description: マルチサイト用のユーティリティ
Author: Toro-Unit 
*/

class MU_Blog_Util {

    public $blogs;

	public function __construct() {
		global $wpdb;
		$this->blogs = array();

		$blogs = $wpdb->get_results( "SELECT blog_id FROM ".$wpdb->blogs." ORDER BY blog_id" );

		foreach ($blogs as $blog) {
			$detals = get_blog_details( $blog->blog_id );
			$key = trim($detals->path,"/");
			
			if(!$key) {
				$key = "root";
			}
			$this->blogs[$key] = $detals;
		}
	}

	public function get_blog_by_path( $path ) {

		$path = trim( $path, "/" );
		if(!isset($this->blogs[$path])) {
			$path = "root";
		}
		return $this->blogs[$path];
	}

	public function switch_to_blog_by_path( $new_blog_path, $validate = false ) {

		$blog = $this->get_blog_by_path( $new_blog_path );
		return switch_to_blog( $blog->blog_id, $validate );
	}

}
$mu_blog_util = new MU_Blog_Util();



function get_blog_by_path( $path ) {
	return $mu_blog_util->get_blog_by_path( $path );
}

function switch_to_blog_by_path( $new_blog_path, $validate = false ) {
	return $mu_blog_util->switch_to_blog_by_path( $new_blog_path, $validate = false );
}


?>