循环到数组并获得唯一特定键值对

问题描述：

Array 
(
    [address_city] => San Jose 
    [address_country] => United States 
    [address_country_code] => US 
    [address_name] => Test User 
    [address_state] => CA 
    [address_status] => confirmed 
    [address_street] => 1 Main St 
    [address_zip] => 95131 
    [business] => [email protected] 
    [charset] => windows-1252 
    [custom] => 
    [first_name] => Test 
    [item_name1] => Product Name 1 
    [item_name2] => Product Name 6 
    [item_name3] => Product Name 8 
    [item_number1] => 1 
    [item_number2] => 6 
    [item_number3] => 8 
    [last_name] => User 
    [mc_currency] => USD 
    [mc_fee] => 0.82 
    [mc_gross] => 18.00 
    [mc_gross_1] => 14.00 
    [mc_gross_2] => 2.00 
    [mc_gross_3] => 2.00 
    [mc_handling] => 0.00 
    [mc_handling1] => 0.00 
    [mc_handling2] => 0.00 
    [mc_handling3] => 0.00 
    [mc_shipping] => 11.00 
    [mc_shipping1] => 11.00 
    [mc_shipping2] => 0.00 
    [mc_shipping3] => 0.00 
    [notify_version] => 3.4 
    [num_cart_items] => 3 
    [payer_email] => [email protected] 
    [payer_id] => TRCLJTHLNCJ7Q 
    [payer_status] => verified 
    [payment_date] => 22:52:56 Jan 27, 2012 PST 
    [payment_fee] => 0.82 
    [payment_gross] => 18.00 
    [payment_status] => Completed 
    [payment_type] => instant 
    [protection_eligibility] => Eligible 
    [quantity1] => 1 
    [quantity2] => 1 
    [quantity3] => 1 
    [receiver_email] => [email protected] 
    [receiver_id] => 74PV23B8KSK84 
    [residence_country] => US 
    [tax] => 0.00 
    [tax1] => 0.00 
    [tax2] => 0.00 
    [tax3] => 0.00 
    [test_ipn] => 1 
    [transaction_subject] => Shopping CartProduct Name 1Product Name 6Product Name 8 
    [txn_id] => 7BS85664SB906284D 
    [txn_type] => cart 
    [verify_sign] => AJ2IuqHp8G0lIxhedAqrwRQbv8fVA4-Gum9e7DMZmEWIFrljEwFCJDfP 
) 
1

来，你可以看到，有这样的键值对，

[items_name1] => Product Name 1 
[items_name2] => Product Name 2 
[items_name3] => Product Name 3

这些密钥不是恒定的，我的意思是，它从一个购物车来了，所以项目名称取决于有多少物品被放置在购物车，购买。现在我的问题是，如何循环到该职位数组，并只获得item_names加上它们相应的值？，因为我需要他们，并在数据库表

我的解决方案是更好 - 它分离每种产品，而不仅仅是项目名称的一切。它甚至给你的产品数量（当然，正如它提到的，这个数字是在数组中提供的）。 – Cheery 2012-01-28 18:23:36

答

循环保存在阵列中的每个元素，并检查是否与键启动“items_name”使用strpos^docs。如果是这样，请将其添加到$items阵列中。

$items = array(); 
foreach ($_POST as $key => $val) 
{ 
    if (strpos($key, 'items_name') === 0) { 
    $items[$key] = $val; 
    } 
} 
var_dump($items);

答

更好的解决方案（$数据是您的阵列）

$output = array(); 
    foreach($data as $field => $value) 
    { 
    if (preg_match('/(.*)(\d+)$/', $field, $match)) 
    { 
     $output[$match[2]][$match[1]] = $value; 
    } 
    }  
    print_r($output);

输出：

Array 
(
    [1] => Array 
     (
      [item_name] => Product Name 1 
      [item_number] => 1 
      [mc_gross_] => 14.00 
      [mc_handling] => 0.00 
      [mc_shipping] => 11.00 
      [quantity] => 1 
      [tax] => 0.00 
     ) 

    [2] => Array 
     (
      [item_name] => Product Name 6 
      [item_number] => 6 
      [mc_gross_] => 2.00 
      [mc_handling] => 0.00 
      [mc_shipping] => 0.00 
      [quantity] => 1 
      [tax] => 0.00 
     ) 

    [3] => Array 
     (
      [item_name] => Product Name 8 
      [item_number] => 8 
      [mc_gross_] => 2.00 
      [mc_handling] => 0.00 
      [mc_shipping] => 0.00 
      [quantity] => 1 
      [tax] => 0.00 
     ) 

)

答

假定$测试作为输出数组，它包含的值。你可以这样做：

$newValue = array(); 
foreach ($test as $testKey=>$testValue) { 
    if (strlen(strstr($testKey,'item_name')) >0 && preg_match_all("/.*?(\d+)$/", $testKey, $matches) > 0) { 
     $newValue[$testKey]=$testValue; 
    } 
} 

print_r($newValue);

这里的strlen（的strstr（$密押， 'ITEM_NAME'））如果字符串 'ITEM_NAME' 存在的指数和preg_match_all（检查 “？/.*（\ d +）$ /” ，$ testKey，$ matches）检查如果带有item_name的字符串以数字值结尾。这将消除所有不以数值结尾的其他item_name键。如果你想利用还那么你可以从状态删除preg_macth

希望这有助于。上述

答

爽快的解决方案是太棒了。我只是想补充一点，你实际上有多少产品是你的阵列中的指标这个变量

[num_cart_items]

可能是，如果你要处理的接线柱阵列有帮助的情况下直接格式化成其他变量，因为你知道要查找多少物品。

循环到数组并获得唯一特定键值对

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