有时分将不同类型的文件分门别类存储，仿佛比年月目录更无意义。例如幻灯片应该存储在slides目录下，下载文件应该存储在downloads文件夹下。就说幻灯片slideshow，我比拟喜爱用自定义文章类型（Custom Post Type）完成，有些幻灯片脚本比拟共性，不支持相对门路，必需用**门路，而后用base参数设置**于哪个文件夹，这样幻灯片必需存储在某个特定的文件夹中，年月方式显然不满足要求。所以，咱们需求条件化的设置上传目录。

一、为Custom Post Type设置上传目录

假定我要将一切在幻灯片类型的文章中上传的文件存储到/wp-content/uploads/slides文件夹中，将上面的代码放到主题的functions.php中即可

function custom_upload_directory( $uploads ) {
    $id = $_REQUEST['post_id'];
        $parent = get_post( $id )->post_parent;
    if( "post-type" == get_post_type( $id ) || "post-type" == get_post_type( $parent ) ) {
        $subdir = 'slides';
        $uploads['subdir'] = $subdir;
        $uploads['path'] = $uploads['basedir'].DIRECTORY_SEPARATOR.$subdir;
        $uploads['url'] = $uploads['baseurl'].'/'.$subdir;
    }
    return $uploads;
}
add_filter( 'upload_dir', 'custom_upload_directory' );

二、将文件保留到插件目录

上面的代码要用在插件中，文件会保留到插件目录下的uploads文件夹下。

/**
 * Change Upload Directory for Custom Post-Type
 *
 * This will change the upload directory for a custom post-type. Attachments will
 * now be uploaded to an "uploads" directory within the folder of your plugin. Make
 * sure you swap out "post-type" in the if-statement with the appropriate value...
 */
function custom_upload_directory( $args ) {
    $id = $_REQUEST['post_id'];
    $parent = get_post( $id )->post_parent;
    // Check the post-type of the current post
    if( "post-type" == get_post_type( $id ) || "post-type" == get_post_type( $parent ) ) {
        $args['path'] = plugin_dir_path(__FILE__) . "uploads";
        $args['url']  = plugin_dir_url(__FILE__) . "uploads";
        $args['basedir'] = plugin_dir_path(__FILE__) . "uploads";
        $args['baseurl'] = plugin_dir_url(__FILE__) . "uploads";
    }
    return $args;
}
add_filter( 'upload_dir', 'custom_upload_directory' );

$args['path'] = plugin_dir_path(__FILE__) . "uploads" . $args['subdir'];
$args['url']  = plugin_dir_url(__FILE__) . "uploads" . $args['subdir'];

三、为后盾治理页面设定upload_dir
用wp_editor在后盾治理页面（比方用add_menu_page创立的页面）创立一个媒体上传性能，心愿一切从该页面上传的文件都保留到wp-content/uploads/myfolder目录下。
由 于ajax上传是间接调用wp-admin/async_upload.php文件，只能经过post_id获取post信息，然后台治理页面并非 post，所以判别什么时分应该更改upload_dir有些费事。此时，能够用采纳判别页面referer的办法,用wp_get_referer() 函数获取举荐url，假如正好与咱们的option page url想等，就更该目录。

function custom_upload_directory( $uploads ) {
   if( wp_get_referer() == 'http://domain.com/wp-admin/admin.php?page=myoptionpage'){
        $subdir = 'myfolder';
        $uploads['subdir'] = $subdir;
        $uploads['path'] = $uploads['basedir'].DIRECTORY_SEPARATOR.$subdir;
        $uploads['url'] = $uploads['baseurl'].'/'.$subdir;
   }
   return $uploads;
}
add_filter( 'upload_dir', 'custom_upload_directory' );

四、参考信息

filter:upload_dir是在wp_upload_dir()函数中调用的

$upload_dir = wp_upload_dir();

$upload_dir now contains something like the following (if successful)
Array (
    [path] => C:\path\to\wordpress\wp-content\uploads\2010\05
    [url] => http://example.com/wp-content/uploads/2010/05
    [subdir] => /2010/05
    [basedir] => C:\path\to\wordpress\wp-content\uploads
    [baseurl] => http://example.com/wp-content/uploads
    [error] =>
)

以上就是安达网络工作室关于《WordPress上传文件存放到不同目录的方法》的一些看法。更多内容请查看本栏目更多内容！