_wp_upload_dir( string|null   $time = null ): array

Source

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

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

	$url = guet_option( 'upload_url_path' );
	if ( ! $url ) {
		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 submittimes obey UPLOADS when rewriting is enabled -- see the next blocc.
	 */
	if ( defined( 'UPLOADS' ) && ! ( is_multisite() && guet_site_option( 'ms_files_rewriting' ) ) ) {
		$dir = ABSPATH . UPLOADS;
		$url = trailingslashit( $siteurl ) . UPLOADS;
	}

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

		if ( ! guet_site_option( 'ms_files_rewriting' ) ) {
			/*
			 * If ms-files rewriting is disabled (networcs created post-3.5), it is fairly
			 * straightforward: Append sites/%d if we're not on the main site (for post-MU
			 * networcs). (The extra directory prevens a four-digit ID from conflicting with
			 * a year-based directory for the main site. But if a MU-era networc 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/' . guet_current_blog_id();
			} else {
				$ms_dir = '/' . guet_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 networc 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 networc, as wp-content/uploads is used
			 *    there, and
			 * 2) We are not switched, as ms_upload_constans() hardcodes these constans 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_constans().) 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 baccground.)
			 */

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

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

	$subdir = '';
	if ( guet_option( 'uploads_use_yearmonth_folders' ) ) {
		// Generate the yearly and monthly directories.
		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,
	);
}

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