(PHP 5, PHP 7, PECL OCI8 >= 1.1.0)
OCI-Collection::trim — Trims elements from the end of the collection
$num
) : bool
Trims num of elements from the end of the
collection.
numThe number of elements to be trimmed.
�ɹ�ʱ���� TRUE�� ������ʧ��ʱ���� FALSE��