我试图在WordPress中为多个自定义帖子类型创建一个自定义元框，而不创建重复的代码。

目前我有：

add_meta_box(\'adv_form_box1\', \'Advanced Form\', \'adv_form1\', \'custom-post-type1\', \'side\', \'high\');
add_meta_box(\'adv_form_box2\', \'Advanced Form\', \'adv_form2\', \'custom-post-type2\', \'side\', \'high\');
add_meta_box(\'adv_form_box3\', \'Advanced Form\', \'adv_form3\', \'custom-post-type3\', \'side\', \'high\');

function adv_form1() {
global $post;
$custom = get_post_custom($post->ID);
$filename = $custom[\'filename\'][0]; ?>
<label>Filename:</label> (this field is required)<br/><input name="filename" size="70" value="<?php echo $filename; ?>" />
<?php }

function adv_form2() {
global $post;
$custom = get_post_custom($post->ID);
$filename = $custom[\'filename\'][0]; ?>
<label>Filename:</label> (this field is required)<br/><input name="filename" size="70" value="<?php echo $filename; ?>" />
<?php }

function adv_form3() {
global $post;
$custom = get_post_custom($post->ID);
$filename = $custom[\'filename\'][0]; ?>
<label>Filename:</label> (this field is required)<br/><input name="filename" size="70" value="<?php echo $filename; ?>" />
<?php }

我感觉好像在创建一堆额外的不需要的代码。是否可以将元框设置为“全局”以用于所有帖子类型？

$postTypes = array( \'custom-post-type1\', \'custom-post-type2\', \'custom-post-type3\' );
foreach( $postTypes as $pt )
    add_meta_box( \'adv_form_box1\', \'Advanced Form\', \'adv_form1\', $pt, \'side\', \'high\' );

add_meta_box(\'adv_form_box\', \'Advanced Form\', \'adv_form\', \'custom-post-type1\', \'side\', \'high\');
add_meta_box(\'adv_form_box\', \'Advanced Form\', \'adv_form\', \'custom-post-type2\', \'side\', \'high\');
add_meta_box(\'adv_form_box\', \'Advanced Form\', \'adv_form\', \'custom-post-type3\', \'side\', \'high\');

function adv_form() {
    global $post;
    $custom = get_post_custom($post->ID);
    $filename = $custom[\'filename\'][0]; 
?>
<label>Filename:</label> (this field is required)<br/><input name="filename" size="70" value="<?php echo $filename; ?>" />
<?php 
}

add_meta_box(\'adv_form_box1\', \'Advanced Form\', \'adv_form1\', \'custom-post-type1\', \'side\', \'high\');
add_meta_box(\'adv_form_box2\', \'Advanced Form\', \'adv_form1\', \'custom-post-type2\', \'side\', \'high\');
add_meta_box(\'adv_form_box3\', \'Advanced Form\', \'adv_form1\', \'custom-post-type3\', \'side\', \'high\');