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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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399 |
|
400 | /** |
401 | * Filters the arguments for registering a post type. |
402 | * |
403 | * @since 4.4.0 |
404 | * |
405 | * @param array $args Array of arguments for registering a post type. |
406 | * @param string $post_type Post type key. |
407 | */ |
408 | $args = apply_filters( 'register_post_type_args', $args, $this->name ); |
409 |
|
410 | $has_edit_link = ! empty( $args['_edit_link'] ); |
411 |
|
412 | // Args prefixed with an underscore are reserved for internal use. |
413 | $defaults = array( |
414 | 'labels' => array(), |
415 | 'description' => '', |
416 | 'public' => false, |
417 | 'hierarchical' => false, |