Manual:Hooks/SavePreferences

SavePreferences
Available from version 1.11.0 Removed in version 1.16.0 called at the end of PreferencesForm::savePreferences(); returning false prevents the preferences from being saved.
Define function:	public static function onSavePreferences( $form, $user, &$message, $old ) { ... }
Attach hook:	$wgHooks['SavePreferences'][] = 'MyExtensionHooks::onSavePreferences';
Called from:	SpecialPreferences.php

For more information about attaching hooks, see Manual:Hooks.
For examples of extensions using this hook, see Category:SavePreferences extensions.

Details

• $form: the PreferencesForm
• $user: the User object to save preferences to
• &$message: change this to set an error message (ignored if the hook does not return false)
• $old: array of old options (added in 1.13)