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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
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801 |
|
802 | /** |
803 | * Filters the result of WP_Upgrader::install_package(). |
804 | * |
805 | * @since 5.7.0 |
806 | * |
807 | * @param array|WP_Error $result Result from WP_Upgrader::install_package(). |
808 | * @param array $hook_extra Extra arguments passed to hooked filters. |
809 | */ |
810 | $result = apply_filters( 'upgrader_install_package_result', $result, $options['hook_extra'] ); |
811 |
|
812 | $this->skin->set_result( $result ); |
813 | if ( is_wp_error( $result ) ) { |
814 | $this->skin->error( $result ); |
815 |
|
816 | if ( ! method_exists( $this->skin, 'hide_process_failed' ) || ! $this->skin->hide_process_failed( $result ) ) { |
817 | $this->skin->feedback( 'process_failed' ); |
818 | } |
819 | } else { |