Question

我有一个我已经制作的对象

class SalesReportObject
{
    public $eventname = "";
    public $v_firstname = "";
    public $v_secondname = "";
    public $soldStock = array();
    function Push($productname, $soldquantity)
    {
        $soldStock[$productname] = $soldquantity;
    }
    function Sum($productname, $soldquantity)
    {
        $soldStock[$productname] += $soldquantity;
    }
    function __construct($e, $f, $s)
    {
        $eventname = $e;
        $v_firstname = $f;
        $v_secondname = $s;
    }

}

我使用以下

填充它

$salesreportq = 'SELECT Volunteers.SecondName, Volunteers.FirstName, Events.EventName, ItemIssue.Quantity, ItemIssue.ReturnQuantity, Stock.ProductName, EventInstance.InstanceID 
             FROM EventInstance
             INNER JOIN Events ON EventInstance.EventID = Events.EventID
             INNER JOIN ItemIssue ON EventInstance.InstanceID = ItemIssue.InstanceID 
             INNER JOIN Volunteers ON EventInstance.VolunteerID = Volunteers.VolunteerID 
             INNER JOIN Stock ON ItemIssue.StockID = Stock.StockID
             WHERE (ItemIssue.Returned = ?)';
$yes = array('Yes');                 
$salesreportres = sqlsrv_query($conn, $salesreportq, $yes);
$arr = array();

while ($sRow = sqlsrv_fetch_array($salesreportres, SQLSRV_FETCH_ASSOC))
{
    $sold = $sRow['Quantity'] - $sRow['ReturnQuantity'];

    if (array_key_exists($sRow['InstanceID'], $arr))
    {

        if (array_key_exists($arr[$sRow['InstanceID']]->$soldStock['ProductName']))
        {
            $arr['InstanceID']->Sum($sRow['InstanceID'], $sold);
        }
        else
        {
            $arr['InstanceID']->Push($sRow['InstanceID'], $sold);
        }
    }
    else
    {   
        $arr['InstanceID'] = new SalesReportObject($sRow['EventName'], $sRow['FirstName'], $sRow['SecondName']);
        $arr['InstanceID']->Push($sRow['InstanceID'], $sold);
    }

}

这似乎主要起作用，当我print_r（）它我得到了

Array ( [InstanceID] => SalesReportObject Object ( [eventname] => [v_firstname] => [v_secondname] => [soldStock] => Array ( ) ) )

正如您所看到的，它已使用对象的变量名称而不是预期值填充它。它可能是非常愚蠢的东西，但是我无法看到它（今天已经存在了一段时间）

我的问题是为什么会发生这种情况，我需要修改什么？提前感谢您的建议

Answer 1

您需要使用$this引用您的类属性。用以下代码替换您的类代码：

class SalesReportObject
{
    public $eventname = "";
    public $v_firstname = "";
    public $v_secondname = "";
    public $soldStock = array();

    function Push($productname, $soldquantity)
    {
        $this->soldStock[$productname] = $soldquantity;

    }

    function Sum($productname, $soldquantity)
    {
        $this->soldStock[$productname] += $soldquantity;
    }

    function __construct($e, $f, $s)
    {
        $this->eventname = $e;
        $this->v_firstname = $f;
        $this->v_secondname = $s;
    }
}

包含对象的关联数组，每个对象包含一个数组，填充变量名而不是值

1 个答案: