SplStack::__construct Constructs a new stack implemented using a doubly linked list &reftitle.description; SplStack::__construct This constructs a new empty stack. This method automatically sets the iterator mode to SplDoublyLinkedList::IT_MODE_LIFO. &reftitle.parameters; &no.function.parameters; &reftitle.returnvalues; &return.void; &reftitle.examples; ]]> &example.outputs;