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    Ds\Queue::pop
    
  
    (PECL ds >= 1.0.0)
    Ds\Queue::pop — Removes and returns the value at the front of the queue
    

 
    

 
    
  
    說明
    
  
    
   public Ds\Queue::pop(): mixed
    

  
    
    Removes and returns the value at the front of the queue.
  
    
 
    


 
    
  
    參數(shù)
    
  
    此函數(shù)沒有參數(shù)。
    
 
    


 
    
  
    返回值
    
  
    
    The removed value which was at the front of the queue.
  
    
 
    


 
    
  
    錯(cuò)誤／異常
    
  
    
   UnderflowException if empty.
  
    
 
    


 
    
  
    范例
    
  
    
   
    示例 #1 Ds\Queue::pop() example
    
   
    

    
<?php
    $queue     = new \Ds\Queue();

    $queue->push("a");
    $queue->push("b");
    $queue->push("c");

    var_dump($queue->pop());
    var_dump($queue->pop());
    var_dump($queue->pop());
    ?>
    

    
   
    

   
    以上例程的輸出類似于：
    
   
    

    string(1) "a"
string(1) "b"
string(1) "c"