Function and usage of get_blog_details() in wordpress

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    2024-01-06T16:10:24+00:00

    The get_blog_details() function in WordPress is used to retrieve details about a blog from the blogs table and blog options. Here's a detailed explanation of the function and its usage:

    Function Signature:

    get_blog_details( int|string|array $fields = null, bool $get_all = true ): WP_Site|false
    

    Function Description:

    • Purpose: get_blog_details() is designed to obtain information about a specific blog within a WordPress multisite network. It retrieves various details such as the blog's URL, ID, path, and other metadata.
    • Functionality: It fetches data from the blogs table, and if $get_all is set to true, it also retrieves additional information from the blog's options table.

    Parameters:

    1. $fields (int|string|array, optional):

      • Description: This parameter specifies which blog to retrieve details for. It can be a blog ID, a blog slug, or an array of fields to query against.
      • Use Case: By default, it is set to null, which means it will use the current blog ID.
      • Examples:
        • Using a blog ID: get_blog_details( 5 )
        • Using a blog slug: get_blog_details( 'my-blog-slug' )
    2. $get_all (bool, optional):

      • Description: Determines whether to retrieve all details (including those from the blog's options table) or only the details found in the blogs table.
      • Default: true, meaning it fetches all details.
      • Example: To retrieve limited information, you can set it to false: get_blog_details( 5, false )

    Return Values:

    • WP_Site|false
      • Success: Returns a WP_Site object containing blog details.
      • Failure: Returns false if the blog cannot be found or if there is an error in retrieval.

    Sample Usage:

    $blog_details = get_blog_details( array( 'blog_id' => 5, 'path' => '/sample-blog/' ), true );
    
    if ( $blog_details ) {
        echo 'Blog Name: ' . $blog_details->blogname;
        echo 'Blog URL: ' . $blog_details->siteurl;
        // other properties of the blog can be accessed similarly
    } else {
        echo 'Blog details not found.';
    }
    

    In this example, the function is used to fetch details of a blog with a specific ID and path. It then checks if the details are successfully retrieved and displays the blog name and URL.

    Important Notes:

    • Multisite Requirement: get_blog_details() is specifically useful in WordPress multisite environments. It may not be relevant in a standard WordPress installation.
    • Caching: WordPress caches the results of get_blog_details(), which helps in improving performance, especially in multisite networks with many blogs.

    This function is a crucial tool for developers working with multisite WordPress installations, allowing for the efficient management and retrieval of blog-specific data.

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