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add_{$meta_type}_metadata › WordPress Filter Hooks

Since3.1.0
Deprecatedn/a
› apply_filters( "add_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $unique )
Parameters: (5)
  • () check Whether to allow adding metadata for the given type. Return false or a meta ID to short-circuit the function. Return null to continue with the default behavior.
    Required: Yes
  • () object_id ID of the object metadata is for.
    Required: Yes
  • () meta_key Metadata key.
    Required: Yes
  • () meta_value Metadata value. Must be serializable if non-scalar.
    Required: Yes
  • () unique Whether the specified meta key should be unique for the object.
    Required: Yes
Defined at:
Codex:

Short-circuits adding metadata of a specific type.

The dynamic portion of the hook name, `$meta_type`, refers to the meta object type (blog, 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_blog_metadata` - `add_post_metadata` - `add_comment_metadata` - `add_term_metadata` - `add_user_metadata`


Related Functions: add_metadata, delete_metadata, wp_read_image_metadata, get_metadata, add_comment_meta, wp_get_attachment_metadata


Related Hooks: add_-meta_type-_meta, get_-meta_type-_metadata, added_-meta_type-_meta, delete_-meta_type-_metadata, update_-meta_type-_metadata

Source 

$check = apply_filters( "add_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $unique );