media_handle_sideload()
Function: Handles a side-loaded file in the same way as an uploaded file is handled by media_handle_upload().
Source: wp-admin/includes/media.php:459
Function: Handles a side-loaded file in the same way as an uploaded file is handled by media_handle_upload().
Source: wp-admin/includes/media.php:459
Function: Outputs the iframe to display the media upload page.
Source: wp-admin/includes/media.php:550
Action Hook: Fires when admin styles enqueued for the legacy (pre-3.5.0) media upload popup are printed.
Source: wp-admin/includes/media.php:580