我正在寻找返回多个get\\u post\\u元数据的解决方案。。。

当前我使用的meta box数组如下所示：

$meta_boxes[] = array(
\'id\' => \'setlist\',
\'title\' => \'Setlist Information\',
\'pages\' => array(\'post\'),
\'fields\' => array(
    array(
        \'name\' => \'Setlist 1\',                  // field name
        \'desc\' => \'Entry 1\',                                    // field description, optional
        \'id\' => $prefix . \'setlist_1\',              // field id, i.e. the meta key
        \'type\' => \'text\',                   // text box
        \'std\' => \'\',                                            // default value, optional
        \'style\' => \'width: 100px\',              // custom style for field, added in v3.1
    ),
            array(
        \'name\' => \'Setlist 2\',                  
        \'desc\' => \'Entry 2\',                                    
        \'id\' => $prefix . \'setlist_2\',              
        \'type\' => \'text\',                                       
        \'std\' => \'\',                                            
        \'style\' => \'width: 100px\',              
    ),

依此类推（即setlist\\u 3,4,5,6,7,8….）

在我的单曲里。php我有：

<?php if ( get_post_meta( $post->ID, \'rw_setlist_1\', true ) ) : echo "<li>"; echo get_post_meta( $post->ID, \'rw_setlist_1\', true ); echo "</li>"; ?>
<?php endif; ?>
<?php if ( get_post_meta( $post->ID, \'rw_setlist_2\', true ) ) : echo "<li>"; echo get_post_meta( $post->ID, \'rw_setlist_2\', true ); echo "</li>"; ?>
 <?php endif; ?>
 <?php if ( get_post_meta( $post->ID, \'rw_setlist_3\', true ) ) : echo "<li>"; echo get_post_meta( $post->ID, \'rw_setlist_3\', true ); echo "</li>"; ?>
 <?php endif; ?>
 <?php if ( get_post_meta( $post->ID, \'rw_setlist_4\', true ) ) : echo "<li>"; echo get_post_meta( $post->ID, \'rw_setlist_4\', true ); echo "</li>"; ?>
 <?php endif; ?>
 <?php if ( get_post_meta( $post->ID, \'rw_setlist_5\', true ) ) : echo "<li>"; echo get_post_meta( $post->ID, \'rw_setlist_5\', true ); echo "</li>"; ?>

设置列表值的范围从2到30。。。

说我疯了，但我觉得这种方法会导致不必要的长时间加载，对吗？那么，我该如何为此创建一个更高效的脚本，以“更简单的方式”检查数组中的所有值呢。

$custom_fields = get_post_custom($post->ID);
for ($i = 1; $i <= 30; $i++) { 
    if(isset($custom_fields["rw_setlist_$i"])){
        echo "<li>"; 
        echo $custom_fields["rw_setlist_$i"];
    echo "</li>"; 
    }
}