<?php
class agenda{
	
	var $queue;
	
	function agenda(){
		$queue = array();	
	}
	
	function enqueue($item){
		$temp[] = $item;
		foreach($this->queue as $test){
			$temp[] = $test;
		}
		$this->queue = $temp;
	}
	
	function dequeue($item){
		$temp = array();
		foreach($this->queue as $test){
			if($test != $item){
				$temp[] = $test;	
			}	
		}	
	}
	
	function pop(){
		$temp = array_slice($this->queue, 1);
		$return = $this->queue[0];
		$this->queue = $temp;
		return $return;	
	}
	
	function peek(){
		return $this->queue[0];
	}
		
}

?>