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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 |
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269 | * Filters the HTML list content for a specific navigation menu. |
270 | * |
271 | * @since 3.0.0 |
272 | * |
273 | * @see wp_nav_menu() |
274 | * |
275 | * @param string $items The HTML list content for the menu items. |
276 | * @param stdClass $args An object containing wp_nav_menu() arguments. |
277 | */ |
278 | $items = apply_filters( "wp_nav_menu_{$menu->slug}_items", $items, $args ); |
279 |
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280 | // Don't print any markup if there are no items at this point. |
281 | if ( empty( $items ) ) { |
282 | return false; |
283 | } |
284 |
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285 | $nav_menu .= sprintf( $args->items_wrap, esc_attr( $wrap_id ), esc_attr( $wrap_class ), $items ); |
286 | unset( $items ); |
287 |
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