Adds an element to the queue

# SplQueue::enqueue

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

SplQueue::enqueue — Adds an element to the queue

### 说明

public function SplQueue::enqueue(mixed `$value`): void

Enqueues `value` at the end of the queue.

> 注意:

> SplQueue::enqueue() is an alias of SplDoublyLinkedList::push().

### 参数

`value`

  The value to enqueue.

### 返回值

没有返回值。

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