正如@Bainternet所说，这是同一件事。从链接到的问题中提取代码，您可以这样做：

function filter_attachment_fields_to_edit( $form_fields, $post ) {
    $foo = (bool)get_post_meta( $post->ID, \'foo\', true );
    $bar = (bool)get_post_meta( $post->ID, \'bar\', true );

    $form_fields[\'foo\'] = array(
    \'label\' => \'Is Foo\',
    \'input\' => \'html\',
    \'html\' => \'<label for="attachments-\' . $post->ID . \'-foo"> \'.
        \'<input type="checkbox" id="attachments-\' . $post->ID . \'-foo" name="attachments[\' . $post->ID . \'][foo]" value="1"\' . ( $foo ? \' checked="checked"\' : \'\' ) . \' /> Yes</label>  \',
    \'value\' => $foo,
    \'helps\' => \'Check for yes\'
    );

    $form_fields[\'bar\'] = array(
    \'label\' => \'Is Bar\',
    \'input\' => \'html\',
    \'html\' => \'<label for="attachments-\' . $post->ID . \'-bar"> \'.
        \'<input type="checkbox" id="attachments-\'.$post->ID . \'-bar" name="attachments[\' . $post->ID . \'][bar]" value="1"\'.( $bar ? \' checked="checked"\' : \'\' ).\' /> Yes</label>  \',
    \'value\' => $bar,
    \'helps\' => \'Check for yes\'
    );

    return $form_fields;
}