内置的[gallery] shortcode不支持开箱即用。然而，很容易推出自己的“multi-gallery”短代码，如下所示：

<?php
add_action( \'init\', \'wpse36779_add_shortcode\' );
/**
 * Adds the shortcode
 * 
 * @ uses add_shortcode
 */
function wpse36779_add_shortcode()
{
    add_shortcode( \'multigallery\', \'wpse36779_shortcode_cb\' );
}

/**
 * The shortcode callback function
 *
 * @ uses do_shortcode
 */
function wpse36779_shortcode_cb( $atts )
{
    $atts = shortcode_atts(
        array(
            \'id\' => false
        ),
        $atts 
    );

    if( ! $atts[\'id\'] )
    {   
        // no list of ids? Just send back a gallery
        return do_shortcode( \'[gallery]\' );
    }
    else
    {
        $ids = array_map( \'trim\', explode( \',\', $atts[\'id\'] ) );
        $out = \'\';
        foreach( $ids as $id )
        {
            if( $id )
                $out .= do_shortcode( sprintf( \'[gallery id="%s"]\', absint( $id ) ) );
        }
    }
    return $out;
}