function _wp_upload_dir( $time = null ) { $siteurl = get_option( 'siteurl' ); $upload_path = trim( get_option( 'upload_path' ) );

if ( empty( $upload_path ) || 'wp-content/uploads' == $upload_path ) { $dir = WP_CONTENT_DIR . '/uploads'; } elseif ( 0 !== strpos( $upload_path, ABSPATH ) ) { // $dir is absolute, $upload_path is (maybe) relative to ABSPATH $dir = path_join( ABSPATH, $upload_path ); } else { $dir = $upload_path; }

if ( ! $url = get_option( 'upload_url_path_custom' ) ) { if ( empty( $upload_path ) || ( 'wp-content/uploads' == $upload_path ) || ( $upload_path == $dir ) ) { $url = WP_CONTENT_URL . '/uploads'; } else { $url = trailingslashit( $siteurl ) . $upload_path; } }

/* * Honor the value of UPLOADS. This happens as long as ms-files rewriting is disabled. * We also sometimes obey UPLOADS when rewriting is enabled -- see the next block. */ if ( defined( 'UPLOADS' ) && ! ( is_multisite() && get_site_option( 'ms_files_rewriting' ) ) ) { $dir = ABSPATH . UPLOADS; $url = trailingslashit( $siteurl ) . UPLOADS; }

// If multisite (and if not the main site in a post-MU network) if ( is_multisite() && ! ( is_main_network() && is_main_site() && defined( 'MULTISITE' ) ) ) {

if ( ! get_site_option( 'ms_files_rewriting' ) ) { /* * If ms-files rewriting is disabled (networks created post-3.5), it is fairly * straightforward: Append sites/%d if we're not on the main site (for post-MU * networks). (The extra directory prevents a four-digit ID from conflicting with * a year-based directory for the main site. But if a MU-era network has disabled * ms-files rewriting manually, they don't need the extra directory, as they never * had wp-content/uploads for the main site.) */

if ( defined( 'MULTISITE' ) ) { $ms_dir = '/sites/' . get_current_blog_id(); } else { $ms_dir = '/' . get_current_blog_id(); }

$dir .= $ms_dir; $url .= $ms_dir;

} elseif ( defined( 'UPLOADS' ) && ! ms_is_switched() ) { /* * Handle the old-form ms-files.php rewriting if the network still has that enabled. * When ms-files rewriting is enabled, then we only listen to UPLOADS when: * 1) We are not on the main site in a post-MU network, as wp-content/uploads is used * there, and * 2) We are not switched, as ms_upload_constants() hardcodes these constants to reflect * the original blog ID. * * Rather than UPLOADS, we actually use BLOGUPLOADDIR if it is set, as it is absolute. * (And it will be set, see ms_upload_constants().) Otherwise, UPLOADS can be used, as * as it is relative to ABSPATH. For the final piece: when UPLOADS is used with ms-files * rewriting in multisite, the resulting URL is /files. (#WP22702 for background.) */

if ( defined( 'BLOGUPLOADDIR' ) ) { $dir = untrailingslashit( BLOGUPLOADDIR ); } else { $dir = ABSPATH . UPLOADS; } $url = trailingslashit( $siteurl ) . 'files'; } }

$basedir = $dir; $baseurl = $url;

$subdir = ''; if ( get_option( 'uploads_use_yearmonth_folders' ) ) { // Generate the yearly and monthly dirs if ( ! $time ) { $time = current_time( 'mysql' ); } $y = substr( $time, 0, 4 ); $m = substr( $time, 5, 2 ); $subdir = "/$y/$m"; }

$dir .= $subdir; $url .= $subdir;

return array( 'path' => $dir, 'url' => $url, 'subdir' => $subdir, 'basedir' => $basedir, 'baseurl' => $baseurl, 'error' => false, ); }