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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 |
|---|---|
| 70 | |
| 71 | // Fix for page title. |
| 72 | $wp_query->is_404 = false; |
| 73 | |
| 74 | /** |
| 75 | * Fires before the Site Activation page is loaded. |
| 76 | * |
| 77 | * @since 3.0.0 |
| 78 | */ |
| 79 | do_action( 'activate_header' ); |
| 80 | |
| 81 | /** |
| 82 | * Adds an action hook specific to this page. |
| 83 | * |
| 84 | * Fires on {@see 'wp_head'}. |
| 85 | * |
| 86 | * @since MU (3.0.0) |
| 87 | */ |
| 88 | function do_activate_header() { |