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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 |
|---|---|
| 3158 | } |
| 3159 | |
| 3160 | /** |
| 3161 | * Filters the site icon meta tags, so plugins can add their own. |
| 3162 | * |
| 3163 | * @since 4.3.0 |
| 3164 | * |
| 3165 | * @param string[] $meta_tags Array of Site Icon meta tags. |
| 3166 | */ |
| 3167 | $meta_tags = apply_filters( 'site_icon_meta_tags', $meta_tags ); |
| 3168 | $meta_tags = array_filter( $meta_tags ); |
| 3169 | |
| 3170 | foreach ( $meta_tags as $meta_tag ) { |
| 3171 | echo "$meta_tag\n"; |
| 3172 | } |
| 3173 | } |
| 3174 | |
| 3175 | /** |
| 3176 | * Prints resource hints to browsers for pre-fetching, pre-rendering |