Notice:Array to string conversion,该怎么解决

Notice:Array to string conversion
网站中出现下面的错误想请教下怎么解决呢？

A PHP Error was encountered
Severity: Notice
Message: Array to string conversion
Filename: controllers/page.php
Line Number: 162

function showPageV($id,$vnum)
	{
		$this->pageModel->id=$id;
		$this->pageModel->get_entries(); 
        $this->smarty->assign($vnum,$this->pageModel->query->result_array());
        $this->smarty->assign('mainid','theDiv'.$this->p);
	}	

------解决方案--------------------
var_dump($vnum);
看看是什么
------解决方案--------------------

function showPageV($id,$vnum)
{
	$this->pageModel->id=$id;
	$this->pageModel->get_entries(); 
        var_dump($vnum);
        print_r($this->pageModel->query->result_array());die();
        $this->smarty->assign($vnum,$this->pageModel->query->result_array());
        $this->smarty->assign('mainid','theDiv'.$this->p);
}