Question

我的问题可能听起来有些笨拙，但这就是我想做的事情。我有一个从SQL查询获得的名为$data的数组。作为参考，我在这里提出它的前两个要素：

Array
(
    [0] => Array
        (
            [test_pack_id] => 9f27643023a83addd5eed41c4aade840
            [test_pack_name] => Bank Exams Complete Combo
            [test_pack_desc] => This Package contains 24 tests of Reasoning, English and Quantitative Aptitude + 2 Mega tests of all 3 subjects.

Total Tests in this Package : 26
            [test_pack_type_id] => 3
            [test_pack_image] => 
            [test_pack_validity_year] => 0
            [test_pack_validity_month] => 3
            [test_pack_validity_days] => 0
            [test_pack_plan] => paid
            [test_pack_price] => 399.00
            [test_pack_no_tests] => 0
            [test_pack_publish] => yes
            [test_pack_sold] => 1
            [test_pack_created_staff_id] => ff8d4a5ea6bf11dce105aa2fa7b959b8
            [test_pack_updated_staff_id] => 81c4e3607c7e56bbf5461ef150437675
            [test_pack_created_date] => 1347127051
            [test_pack_updated_date] => 1349235701
            [test_pack_purchase_date] => 1351228594
        )

    [1] => Array
        (
            [test_pack_id] => e7e95de96987cc7c89c1f0183110fb38
            [test_pack_name] => Bank Reasoning
            [test_pack_desc] => This package contains 8 tests on Reasoning.
            [test_pack_type_id] => 3
            [test_pack_image] => 
            [test_pack_validity_year] => 0
            [test_pack_validity_month] => 3
            [test_pack_validity_days] => 0
            [test_pack_plan] => free
            [test_pack_price] => 0.00
            [test_pack_no_tests] => 0
            [test_pack_publish] => yes
            [test_pack_sold] => 4
            [test_pack_created_staff_id] => ff8d4a5ea6bf11dce105aa2fa7b959b8
            [test_pack_updated_staff_id] => ff8d4a5ea6bf11dce105aa2fa7b959b8
            [test_pack_created_date] => 1347127196
            [test_pack_updated_date] => 1347127387
            [test_pack_purchase_date] => 1363775709
        )
)

现在我要在这个数组中插入一个新的键值对。为此，我正在向数据库发出一个查询。将为数组$data的每个元素触发查询。它的代码如下：

foreach($data as $data1) {  

            $sql  = " SELECT COUNT(*) as package_count FROM ". TBL_USER_PACKAGES. " WHERE pack_id ='".$data1['test_pack_id']."' AND pack_assign_date  ";  
            $sql .= " BETWEEN UNIX_TIMESTAMP(CURDATE()) and UNIX_TIMESTAMP(DATE_ADD(CURDATE(),INTERVAL 1 day)) ";
            $this->mDb->Query( $sql);
            $data1['package_sold_count'] = $this->mDb->FetchArray(MYSQL_FETCH_SINGLE);
}

但是当我访问此查询的结果时，我会以这样的数组格式获取它：

实际上我想将数组作为新的键值对而不是新的关联数组，如下所示：

    Array(
    [0] => Array
            (
                [test_pack_id] => 9f27643023a83addd5eed41c4aade840
                [test_pack_name] => Bank Exams Complete Combo
                [test_pack_desc] => This Package contains 24 tests of Reasoning, English and Quantitative Aptitude + 2 Mega tests of all 3 subjects.

    Total Tests in this Package : 26
                [test_pack_type_id] => 3
                [test_pack_image] => 
                [test_pack_validity_year] => 0
                [test_pack_validity_month] => 3
                [test_pack_validity_days] => 0
                [test_pack_plan] => paid
                [test_pack_price] => 399.00
                [test_pack_no_tests] => 0
                [test_pack_publish] => yes
                [test_pack_sold] => 1
                [test_pack_created_staff_id] => ff8d4a5ea6bf11dce105aa2fa7b959b8
                [test_pack_updated_staff_id] => 81c4e3607c7e56bbf5461ef150437675
                [test_pack_created_date] => 303
                [test_pack_updated_date] => 1349235701
                [test_pack_purchase_date] => 256
                [package_sold_count] => 4

)

任何人都可以帮助我实现这一目标吗？提前谢谢。

Answer 1

以下简单的事情应该可以正常工作，做你想做的事情：

<?php
    foreach ($array as &$subArray) {
        $subArray["package_sold_count"] = $subArray["package_sold_count"]["package_count"];
    }
    unset($subArray);
?>

或者在分配时简单地设置它：

foreach($data as $data1) {  

            $sql  = " SELECT COUNT(*) as package_count FROM ". TBL_USER_PACKAGES. " WHERE pack_id ='".$data1['test_pack_id']."' AND pack_assign_date  ";  
            $sql .= " BETWEEN UNIX_TIMESTAMP(CURDATE()) and UNIX_TIMESTAMP(DATE_ADD(CURDATE(),INTERVAL 1 day)) ";
            $this->mDb->Query( $sql);

            //First assign a variable
            $dbFetch = $this->mDb->FetchArray(MYSQL_FETCH_SINGLE); 

            //Then refer to it
            $data1['package_sold_count'] = $dbFetch["package_count"]; 
}

Answer 2

在此行中获取新的键/值对时：

 $data1['package_sold_count'] = $this->mDb->FetchArray(MYSQL_FETCH_SINGLE);

你实际上是在取一个数组，即使它只是一个元素，所以这就是你所看到的。

相反，这样做：

$temp = $this->mDb->FetchArray(MYSQL_FETCH_SINGLE);
$data1['package_sold_count'] = $temp['package_count']; // assumes associative array

这也可能有用，但我偶尔会把代码压得太紧。

$data1['package_sold_count'] = $this->mDb->FetchArray(MYSQL_FETCH_SINGLE)['package_count'];

如何在PHP中将数组元素转换为简单元素？

2 个答案: