Fires once a post has been saved.
(int) Post ID.
(WP_Post) Post object.
(bool) Whether this is an existing post being updated.
save_post is an action triggered whenever a post or page is created or updated, which could be from an import, post/page edit form, xmlrpc, or post by email. The data for the post is stored in $_POST, $_GET or the global $post_data, depending on how the post was edited. For example, quick edits use $_POST.
Since this action is triggered right after the post has been saved, you can easily access this post object by using get_post($post_id);.
NOTE: As of WP 3.7, an alternative action has been introduced, which is called for specific post types: save_post_{post_type}. Hooking to this action prevents your callback to be unnecessarily triggered.
If you are calling a function such as wp_update_post that includes the save_post hook, your hooked function will create an infinite loop. To avoid this, unhook your function before calling the function you need, then re-hook it afterward.
// this function makes all posts in the default category private
function set_private_categories($post_id) {
// If this is a revision, get real post ID
if ( $parent_id = wp_is_post_revision( $post_id ) )
$post_id = $parent_id;
// Get default category ID from options
$defaultcat = get_option( 'default_category' );
// Check if this post is in default category
if ( in_category( $defaultcat, $post_id ) ) {
// unhook this function so it doesn't loop infinitely
remove_action( 'save_post', 'set_private_categories' );
// update the post, which calls save_post again
wp_update_post( array( 'ID' => $post_id, 'post_status' => 'private' ) );
// re-hook this function
add_action( 'save_post', 'set_private_categories' );
}
}
add_action( 'save_post', 'set_private_categories' ); File: wp-includes/post.php
| Version | Description |
|---|---|
| 1.5.0 | Introduced. |
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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/hooks/save_post