WordPress Developer Resources
Fires when an ‘action’ request variable is sent.
Filters whether to filter imported data through kses on import.
Fires before a particular screen is loaded.
Fires on the next page load after a successful DB upgrade.
Filters whether to attempt to perform the multisite DB upgrade routine.
Fires as an admin screen or script is being initialized.
Used to call the registered callback for a plugin screen.
Fires before an importer screen is loaded.