如何从对象数组中取消设置元素

Question

我有一个操作系统数组 ($os2)，我想从数组 $phones 中删除所有元素，这些元素没有这些操作系统之一。所以我这样做了，但由于某种原因它不起作用...

$os2 = array("BlackBerry", "Android");
if(count($os2)!=0)
{
    for($i = 0; $i<count($phones); $i++)
    {
        if(!in_array($phones[$i]->os, $os2))
        {
            unset($phones[$i]);
        }
    }
}

这是电话数组中的一个元素：

[0] => Equipment Object
        (
            [carrierDescription:Equipment:private] => T-Mobile
            [carrierId:Equipment:private] => 59
            [manufacturerID:Equipment:private] => 13
            [manufacturerName:Equipment:private] => BlackBerry
            [manufacturerCode:Equipment:private] => Curve 9360  
            [productId:Equipment:private] => 60558
            [currentEquipmentID:Equipment:private] => 29305
            [equipmentName:Equipment:private] => BlackBerry Curve 9360 Black
            [equipmentType:Equipment:private] => Smartphone
            [equipmentShortDescription:Equipment:private] =>  
            [equipmentLongDescription:Equipment:private] => The BlackBerry Curve 9360 for T-Mobile is the next Curve in BlackBerry's line of smartphones. Running the latest BlackBerry 7 operating system and utilizing the powerful BlackBerry 7 Webkit-browser, the BlackBerry Curve 9360 provides an intuitive smartphone experience, perfect for those who depend on their smartphone to keep their personal and work lives organized. Encased in a sleek package, including a wide 2.4 inch screen, full QWERTY keyboard and navigation track-pad, the BlackBerry Curve 9360 is ideal for efficient mobile communication. This new smartphone is also equipped with essential smartphone features such as a 5 megapixel camera with flash, video recorder, and WiFi connectivity for voice and data for a premium smartphone experience, The new Curve 9360 delivers the world's best mobile communications and social experiences with the latest release of BlackBerry Messenger, or BBM. 
            [sugRetailPrice:Equipment:private] => 400
            [displayPrice:Equipment:private] => $999.99
            [equipmentPrice:Equipment:private] => 0
            [numericCost:Equipment:private] => 0
            [rebateAmount:Equipment:private] => $0.00
            [priceAfterRebate:Equipment:private] => Free
            [rebateDescription:Equipment:private] => Free Gift
            [equipmentImageFileSmall:Equipment:private] => images/phones/60558_s.jpg
            [equipmentImageFileMedium:Equipment:private] => images/phones/60558_m.jpg
            [equipmentImageFileLarge:Equipment:private] => images/phones/60558_l.jpg
            [manufacturerLogo:Equipment:private] => _images/logos/manufacturers/selected_manu_blackberry.gif
            [purchaseMode:Equipment:private] => Add a Line
            [productLink:Equipment:private] => r.aspx?p=BlackBerry%20Curve%209360%20Black&c=T-Mobile&r=wowphonefinder&mode=1&s=1
            [upc:Equipment:private] => 610214626622
            [compatibleAccessoriesPageURL:Equipment:private] => DeviceSpecificAccessories.aspx?referringdomain=wowphonefinder&refcode1=standarddatafeed&refcode2=&productid=60558
            [mods:Equipment:private] => 
            [os:Equipment:private] => BlackBerry
            [tethering:Equipment:private] => 
            [hotspot:Equipment:private] => 
            [html:Equipment:private] => HTML
            [triG:Equipment:private] => 3G
            [fourG:Equipment:private] => 
            [fiveMP:Equipment:private] => 
            [bluetooth:Equipment:private] => bluetooth
            [camera:Equipment:private] => camera
            [mail:Equipment:private] => mail
            [gps:Equipment:private] => gps
            [international:Equipment:private] => international
            [mp3:Equipment:private] => MP3
            [vcast:Equipment:private] => 
            [wifi:Equipment:private] => wifi
            [tscreen:Equipment:private] => 
            [appstore:Equipment:private] => appstore
            [fcamera:Equipment:private] => 
            [ptt:Equipment:private] => 
            [rugged:Equipment:private] => 
            [sbluetooth:Equipment:private] => 
            [qwerty:Equipment:private] => qwerty
            [nocolor:Equipment:private] => Curve 9360  
            [colors:Equipment:private] => Black Black
            [hasShort:Equipment:private] => 
            [hasReview:Equipment:private] => 
            [hasAlternative:Equipment:private] => 
            [hasAlternativeExpert:Equipment:private] => 
            [order:Equipment:private] => 
            [review:Equipment:private] => 
            [id] => 260
        )

顺便说一句...它以这种方式工作，但如果有人在不使用另一个变量的情况下找到解决方案，我会非常高兴，只是使用未设置的方法...

if(count($os2)!=0)
{
    $ph = array();
    foreach($phones as $phone)
    {
        foreach($os2 as $o)
        {
            if($phone->os == $o)
            {array_push($ph,$phone);}
        }
    }
    $phones = $ph;
}

有人看到我做错了什么吗？ :) 感谢您的回答...

Answer 1

这个：$os2 = ("BlackBerry", "Android"); 不是一个数组。

我什至不确定它是什么。如果您打开了 PHP，PHP 可能会向您抛出错误和警告。

php中的数组是这样形成的：

$os2 = array("BlackBerry", "Android");

Answer 2

$os2 = ("BlackBerry", "Android");

是一个语法错误。它应该是：

$os2 = array("BlackBerry", "Android");

按其值取消设置特定数组元素：

if (($key = array_search('Android', $os2, TRUE)) !== FALSE) {
    unset($os2[$key]);
}

Answer 3

如果您查看以下行：

[os:Equipment:private] => BlackBerry

您会发现 os 是一个私有变量，因此您无法通过使用 $object->os 来获取它，您将需要使用它的吸气剂。