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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 |
---|---|
30 | switch($action) { |
31 | case 'post': |
32 |
|
33 | if ( !user_can_create_draft($user_ID) ) |
34 | die( __('You are not allowed to create posts or drafts on this blog.') ); |
35 |
|
36 | $post_pingback = (int) $_POST['post_pingback']; |
37 | $content = apply_filters('content_save_pre', $_POST['content']); |
38 | $excerpt = apply_filters('excerpt_save_pre', $_POST['excerpt']); |
39 | $post_title = apply_filters('title_save_pre', $_POST['post_title']); |
40 | $post_categories = apply_filters('category_save_pre', $_POST['post_category']); |
41 | $post_status = apply_filters('status_save_pre', $_POST['post_status']); |
42 | $post_name = apply_filters('name_save_pre', $_POST['post_name']); |
43 | $post_parent = 0; |
44 | $menu_order = 0; |
45 | |
46 |
|
47 | if ( isset($_POST['parent_id']) ) |
48 | $post_parent = (int) $_POST['parent_id']; |