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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 |
|---|---|
| 198 | $post_link = home_url( user_trailingslashit($post_link) ); |
| 199 | } else { |
| 200 | if ( $post_type->query_var && ( isset($post->post_status) && !$draft_or_pending ) ) |
| 201 | $post_link = add_query_arg($post_type->query_var, $slug, ''); |
| 202 | else |
| 203 | $post_link = add_query_arg(array('post_type' => $post->post_type, 'p' => $post->ID), ''); |
| 204 | $post_link = home_url($post_link); |
| 205 | } |
| 206 | |
| 207 | return apply_filters('post_type_link', $post_link, $post, $leavename, $sample); |
| 208 | } |
| 209 | |
| 210 | /** |
| 211 | * Retrieve permalink from post ID. |
| 212 | * |
| 213 | * @since 1.0.0 |
| 214 | * |
| 215 | * @param int $post_id Optional. Post ID. |
| 216 | * @param mixed $deprecated Not used. |