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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 |
|---|---|
| 2773 | ); |
| 2774 | |
| 2775 | /** |
| 2776 | * Filters the site icon meta tags, so Plugins can add their own. |
| 2777 | * |
| 2778 | * @since 4.3.0 |
| 2779 | * |
| 2780 | * @param array $meta_tags Site Icon meta elements. |
| 2781 | */ |
| 2782 | $meta_tags = apply_filters( 'site_icon_meta_tags', $meta_tags ); |
| 2783 | $meta_tags = array_filter( $meta_tags ); |
| 2784 | |
| 2785 | foreach ( $meta_tags as $meta_tag ) { |
| 2786 | echo "$meta_tag\n"; |
| 2787 | } |
| 2788 | } |
| 2789 | |
| 2790 | /** |
| 2791 | * Prints resource hints to browsers for pre-fetching, pre-rendering |