Files
| Filename | Hook Type | Line Number | PHP Doc |
|---|---|---|---|
| wp-includes/meta.php | apply_filters | 78 | /** * Short-circuits adding metadata of a specific type. * * The dynamic portion of the hook name, `$meta_type`, refers to the meta object type * (post, comment, term, user, or any other type with an associated meta table). * Returning a non-null value will effectively short-circuit the function. * * Possible hook names include: * * - `add_post_metadata` * - `add_comment_metadata` * - `add_term_metadata` * - `add_user_metadata` * * @since 3.1.0 * * @param null|bool $check Whether to allow adding metadata for the given type. * @param int $object_id ID of the object metadata is for. * @param string $meta_key Metadata key. * @param mixed $meta_value Metadata value. Must be serializable if non-scalar. * @param bool $unique Whether the specified meta key should be unique for the object. */ |
| wp-includes/meta.php | do_action | 115 | /** * Fires immediately before meta of a specific type is added. * * The dynamic portion of the hook name, `$meta_type`, refers to the meta object type * (post, comment, term, user, or any other type with an associated meta table). * * Possible hook names include: * * - `add_post_meta` * - `add_comment_meta` * - `add_term_meta` * - `add_user_meta` * * @since 3.1.0 * * @param int $object_id ID of the object metadata is for. * @param string $meta_key Metadata key. * @param mixed $_meta_value Metadata value. */ |
Hook Parameters
| Parameter Type | Name | Description |
|---|---|---|
| null|bool | $check | Whether to allow adding metadata for the given type. |
| int | $object_id | ID of the object metadata is for. |
| string | $meta_key | Metadata key. |
| mixed | $meta_value | Metadata value. Must be serializable if non-scalar. |
| bool | $unique | Whether the specified meta key should be unique for the object. |
| null|bool | $check | Whether to allow adding metadata for the given type. |
| int | $object_id | ID of the object metadata is for. |
| string | $meta_key | Metadata key. |
| mixed | $meta_value | Metadata value. Must be serializable if non-scalar. |
| bool | $unique | Whether the specified meta key should be unique for the object. |