{$this->prefix}settings_update

See hook in action

See this hook used in plugins:

Select Pluginall-in-one-seo-pack.2.7.2all-in-one-seo-pack.2.7.3all-in-one-seo-pack.2.8all-in-one-seo-pack.2.9all-in-one-seo-pack.2.9.1all-in-one-seo-pack.2.10all-in-one-seo-pack.2.10.1all-in-one-seo-pack.2.11all-in-one-seo-pack.2.12all-in-one-seo-pack.2.12.1all-in-one-seo-pack.3.0.4all-in-one-seo-pack.3.1all-in-one-seo-pack.3.1.1all-in-one-seo-pack.3.2.3all-in-one-seo-pack.3.2.4all-in-one-seo-pack.3.2.5all-in-one-seo-pack.3.2.7all-in-one-seo-pack.3.2.8all-in-one-seo-pack.3.2.9all-in-one-seo-pack.3.2.10all-in-one-seo-pack.3.3all-in-one-seo-pack.3.3.1.1all-in-one-seo-pack.3.3.2all-in-one-seo-pack.3.3.3all-in-one-seo-pack.3.3.4all-in-one-seo-pack.3.3.5all-in-one-seo-pack.3.4.2all-in-one-seo-pack.3.4.3all-in-one-seo-pack.3.5.2all-in-one-seo-pack.3.6.2all-in-one-seo-pack.3.7.0all-in-one-seo-pack.3.7.1