private function nextTick()
{
$this->future->rewind();
while ($this->future->valid() && ($task = $this->future->current())) {
if (!$task->isBlocked() || !$task->isStarted()) {
$this->tick->enqueue($task);
$this->future->offsetUnset($this->future->key());
$this->future->prev();
}
$this->future->next();
}
}
/**
* Removes a maintenance task entry from the maintenance task list
* @param $maintenanceTaskEntryIdentifier Remove entry with this identifier
* @return bool Result of attempted removal
* @throws InvalidArgumentException if the provided argument is not set or of correct type
*/
public function removeMaintenanceTaskEntry($maintenanceTaskEntryIdentifier)
{
if (!isset($maintenanceTaskEntryIdentifier)) {
//argument check
throw new InvalidArgumentException("Missing Argument");
} else {
if (!is_numeric($maintenanceTaskEntryIdentifier)) {
//argument check
throw new InvalidArgumentException("maintenanceTaskEntryIdentifier is not a number");
}
}
if ($this->maintenanceTaskList->isEmpty()) {
//if list is empty, nothing to remove
return false;
} else {
if ($this->retrieveMaintenanceTaskEntry($maintenanceTaskEntryIdentifier) != null) {
$this->maintenanceTaskList->offsetUnset($this->maintenanceTaskList->key());
//remove from list
return true;
//return true, success
} else {
return false;
}
}
//if entry was not found, return false
}
* 栈和队列都是继承于双向链表，所以，所有双向链表的方法都可以被栈和队列使用。调用方法也一致。
*/
$list = new SplDoublyLinkedList();
// push($value)
// 在结尾插入一个新值
$list->push('value1');
$list->push('value2');
$list->push('value3');
$list->push('value4');
$list->push('value5');
// pop()
// 抛出结尾的一个元素，会使得链表结构减少一个
$list->pop();
// key()
// 获得当前节点的索引值
$list->key();
// count()
// 获得链表的数量
$list->count();
// rewind()
// 将指针返回至初始节点
$list->rewind();
// current()
// 获得当前节点
$list->current();
// top()
// 返回最后一个节点的值
$list->top();
// bottom()
// 返回第一个节点的值
$list->bottom();
<td class="center">
<?php
if ($_SESSION['admin'] == 1) {
?>
<a class="btn btn-danger" href="product.php?act=4&pas=<?php
echo $_GET['pas'];
?>
&type=<?php
echo $_GET['type'];
?>
&prods=<?php
echo $_GET['prods'];
?>
&del=<?php
echo $listPila->key();
?>
&sel=<?php
echo $_GET['sel'];
?>
">
<i class="glyphicon glyphicon-trash icon-white"></i>
Borrar
</a>
<?php
}
?>
<a class="btn btn-warning" href="product.php?act=8&pas=<?php
echo $_GET['pas'];
?>
&type=<?php
/**
* Return current token index.
*
* @return mixed The current token index.
* @link http://www.php.net/manual/en/spldoublylinkedlist.key.php
*/
public function key()
{
return $this->tokens->key();
}
