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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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377 |
|
378 | /** |
379 | * Filters the arguments for registering a post type. |
380 | * |
381 | * @since 4.4.0 |
382 | * |
383 | * @param array $args Array of arguments for registering a post type. |
384 | * @param string $post_type Post type key. |
385 | */ |
386 | $args = apply_filters( 'register_post_type_args', $args, $this->name ); |
387 |
|
388 | $has_edit_link = ! empty( $args['_edit_link'] ); |
389 |
|
390 | // Args prefixed with an underscore are reserved for internal use. |
391 | $defaults = array( |
392 | 'labels' => array(), |
393 | 'description' => '', |
394 | 'public' => false, |
395 | 'hierarchical' => false, |