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wordpress函数get_blog_id_from_url()用法示例

get_blog_id_from_url( string $domain,  string $path = '/' )

Get a blog’s numeric ID from its URL.


描述

On a subdirectory installation like example.com/blog1/, $domain will be the root ‘example.com’ and $path the subdirectory ‘/blog1/’. With subdomains like blog1.example.com, $domain is ‘blog1.example.com’ and $path is ‘/’.

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参数

$domain

(string)
(Required)

$path

(string)
(Optional)
Not required for subdomain installations.

Default value: ‘/’


返回值

(int) 0 if no blog found, otherwise the ID of the matching blog


源代码

File: wp-includes/ms-functions.php

function get_blog_id_from_url( $domain, $path = '/' ) {
	$domain = strtolower( $domain );
	$path = strtolower( $path );
	$id = wp_cache_get( md5( $domain . $path ), 'blog-id-cache' );

	if ( $id == -1 ) // blog does not exist
		return 0;
	elseif ( $id )
		return (int) $id;

	$args = array(
		'domain' => $domain,
		'path' => $path,
		'fields' => 'ids',
	);
	$result = get_sites( $args );
	$id = array_shift( $result );

	if ( ! $id ) {
		wp_cache_set( md5( $domain . $path ), -1, 'blog-id-cache' );
		return 0;
	}

	wp_cache_set( md5( $domain . $path ), $id, 'blog-id-cache' );

	return $id;
}

更新日志

Version 描述
MU 2.6.5 Introduced.

相关函数

Uses

  • wp-includes/ms-blogs.php:
    get_sites()
  • wp-includes/cache.php:
    wp_cache_get()
  • wp-includes/cache.php:
    wp_cache_set()

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    Contributed by Codex

    Example

    
    // For subdirectory installs
    $blog_id = get_blog_id_from_url( "example.com", "/blog1/" );
    
    // For subdomain installs
    $blog_id = get_blog_id_from_url( "blog1.example.com" );
    

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