WordPress function for get file size in attachment

the-file-size.php

if( !function_exists( 'the_file_size' ) ) {

    /**
     * 
     * WordPress function for get file size in attachment
     * 
     * @author  Everaldo Matias
     * @link    https://everaldo.dev
     * 
     * @version 1.0
     * @license http://www.opensource.org/licenses/mit-license.html MIT License
     * 
     * @see     https://developer.wordpress.org/reference/functions/get_attached_file/
     * @see     https://www.php.net/manual/pt_BR/function.filesize.php
     * 
     * @param   string,integer  $id of the attachment
     * 
     */

    function the_file_size( $id ) {

        // Get the file path
        $file_path = get_attached_file( $id );

        // Get the file size
        $file_size = filesize( $file_path );

        // Return file size in megabytes
        $file_size = round( $file_size / 1024 / 1024, 1 );

        echo $file_size . ' MB';

    }
    
}