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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 |
|---|---|
| 180 | * |
| 181 | * @type string $href The href attribute. |
| 182 | * @type string $aria-current The aria-current attribute. |
| 183 | * } |
| 184 | * @param WP_Post $page Page data object. |
| 185 | * @param int $depth Depth of page, used for padding. |
| 186 | * @param array $args An array of arguments. |
| 187 | * @param int $current_page_id ID of the current page. |
| 188 | */ |
| 189 | $atts = apply_filters( 'page_menu_link_attributes', $atts, $page, $depth, $args, $current_page_id ); |
| 190 | |
| 191 | $attributes = ''; |
| 192 | foreach ( $atts as $attr => $value ) { |
| 193 | if ( is_scalar( $value ) && '' !== $value && false !== $value ) { |
| 194 | $value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value ); |
| 195 | $attributes .= ' ' . $attr . '="' . $value . '"'; |
| 196 | } |
| 197 | } |
| 198 | |