class QueueClass
{
private $queue=null;
private $fornt=0;
private $tail=0;
public function __construct()
{
$this->fornt=0;
$this->tail=0;
$this->queue=array();
}
public function add_item($item)
{
$this->queue[$this->tail++]=$item;
}
public function del_item()
{
if(!$this->is_empty())
{
$del=$this->queue[$this->fornt];
unset($this->queue[$this->fornt++]);
return $del;
}
}
public function is_empty()
{
if($this->fornt===$this->tail)
{
return true;
}
}
public function get_queue()
{
return $this->queue;
}
public function get_length()
{
return count($this->queue);
}
}
?>
