Download a package.
WP_Upgrader::fs_connect
Connect to the filesystem.
WP_Upgrader::generic_strings
Add the generic strings to WP_Upgrader::$strings.
WP_Upgrader::init
Initialize the upgrader.
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WP_Upgrader::__construct
Construct the upgrader with a skin.
upgrader_process_complete
Fires when the upgrader process is complete.
upgrader_package_options
Filters the package options before running an update.
upgrader_post_install
Filters the installation response after the installation has finished.
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upgrader_clear_destination
Filters whether the upgrader cleared the destination.
upgrader_pre_install
Filters the install response before the installation has started.
upgrader_source_selection
Filters the source file location for the upgrade package.
upgrader_pre_download
Filters whether to return the package.
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WP_Upgrader
Core class used for upgrading/installing a local set of files via the Filesystem Abstraction classes from a Zip file.