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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 |
|---|---|
| 721 | /** |
| 722 | * Filters the installation response after the installation has finished. |
| 723 | * |
| 724 | * @since 2.8.0 |
| 725 | * |
| 726 | * @param bool $response Installation response. |
| 727 | * @param array $hook_extra Extra arguments passed to hooked filters. |
| 728 | * @param array $result Installation result data. |
| 729 | */ |
| 730 | $res = apply_filters( 'upgrader_post_install', true, $args['hook_extra'], $this->result ); |
| 731 | |
| 732 | if ( is_wp_error( $res ) ) { |
| 733 | $this->result = $res; |
| 734 | return $res; |
| 735 | } |
| 736 | |
| 737 | // Bombard the calling function will all the info which we've just used. |
| 738 | return $this->result; |
| 739 | } |