SplQueue::__construct
(PHP 5 >= 5.3.0, PHP 7)
SplQueue::__construct — Constructs a new queue implemented using a doubly linked list
说明
public SplQueue::__construct()
This constructs a new empty queue.
注意:
This method automatically sets the iterator mode to SplDoublyLinkedList::IT_MODE_FIFO.
参数
此函数没有参数。
范例
示例 #1 SplQueue::__construct() example
<?php
$q = new SplQueue();
$q[] = 1;
$q[] = 2;
$q[] = 3;
foreach ($q as $elem) {
echo $elem."\n";
}
?>
以上例程会输出：
1 2 3
示例 #2 Efficiently handling tasks with SplQueue
<?php
$q = new SplQueue();
$q->setIteratorMode(SplQueue::IT_MODE_DELETE);
// ... enqueue some tasks on the queue ...
// process them
foreach ($q as $task) {
// ... process $task ...
// add new tasks on the queue
$q[] = $newTask;
// ...
}
?>
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