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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 |
|---|---|
| 2821 | } |
| 2822 | |
| 2823 | /** |
| 2824 | * Filters the site icon meta tags, so Plugins can add their own. |
| 2825 | * |
| 2826 | * @since 4.3.0 |
| 2827 | * |
| 2828 | * @param array $meta_tags Site Icon meta elements. |
| 2829 | */ |
| 2830 | $meta_tags = apply_filters( 'site_icon_meta_tags', $meta_tags ); |
| 2831 | $meta_tags = array_filter( $meta_tags ); |
| 2832 | |
| 2833 | foreach ( $meta_tags as $meta_tag ) { |
| 2834 | echo "$meta_tag\n"; |
| 2835 | } |
| 2836 | } |
| 2837 | |
| 2838 | /** |
| 2839 | * Prints resource hints to browsers for pre-fetching, pre-rendering |