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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 |