SplDoublyLinkedList::shift

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SplDoublyLinkedList::shift — Shifts a node from the beginning of the doubly linked list

說明

public SplDoublyLinkedList::shift(): mixed

參數(shù)

此函數(shù)沒有參數(shù)。

返回值

The value of the shifted node.

錯誤／異常

Throws RuntimeException when the data-structure is empty.