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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 |
|---|---|
| 589 | /** |
| 590 | * Filters the installation response after the installation has finished. |
| 591 | * |
| 592 | * @since 2.8.0 |
| 593 | * |
| 594 | * @param bool $response Installation response. |
| 595 | * @param array $hook_extra Extra arguments passed to hooked filters. |
| 596 | * @param array $result Installation result data. |
| 597 | */ |
| 598 | $res = apply_filters( 'upgrader_post_install', true, $args['hook_extra'], $this->result ); |
| 599 | |
| 600 | if ( is_wp_error($res) ) { |
| 601 | $this->result = $res; |
| 602 | return $res; |
| 603 | } |
| 604 | |
| 605 | //Bombard the calling function will all the info which we've just used. |
| 606 | return $this->result; |
| 607 | } |