WordPress at Your Fingertips
function is not described

WC_Data_Store_WP::update_or_delete_post_meta() protected WC 3.6.0

Update meta data in, or delete it from, the database.

Avoids storing meta when it's either an empty string or empty array. Other empty values such as numeric 0 and null should still be stored. Data-stores can force meta to exist using must_exist_meta_keys.

Note: WordPress get_metadata function returns an empty string when meta data does not exist.

{} It's a method of the class: WC_Data_Store_WP{}

No Hooks.

Return

true|false. True if updated/deleted.

Usage

// protected - for code of main (parent) or child class
$result = $this->update_or_delete_post_meta( $object, $meta_key, $meta_value );
$object(WC_Data) (required)
The WP_Data object (WC_Coupon for coupons, etc).
$meta_key(string) (required)
Meta key to update.
$meta_value(mixed) (required)
Value to save.

Changelog

Since 3.6.0 Introduced.
Since 3.6.0 Added to prevent empty meta being stored unless required.

Code of WC_Data_Store_WP::update_or_delete_post_meta() WC 5.7.1

protected function update_or_delete_post_meta( $object, $meta_key, $meta_value ) {
	if ( in_array( $meta_value, array( array(), '' ), true ) && ! in_array( $meta_key, $this->must_exist_meta_keys, true ) ) {
		$updated = delete_post_meta( $object->get_id(), $meta_key );
	} else {
		$updated = update_post_meta( $object->get_id(), $meta_key, $meta_value );
	}

	return (bool) $updated;
}