行成列和/或php中的交叉表数组

Question

我有这个帐单表，我可以根据报告要求从中获取记录。

我得到的数组是这样的：

Array(
[0] => stdClass Object
    (
        [bid] => 3
        [uid] => 2
        [total_inc] => 100
        [total_exp] => 55
        [mon] => 1
        [year] => 2012
        [mstdatereg] => 2012-03-14
    )

[1] => stdClass Object
    (
        [bid] => 2
        [uid] => 3
        [total_inc] => 85
        [total_exp] => 45
        [mon] => 1
        [year] => 2012
        [mstdatereg] => 2012-03-14
    )

[2] => stdClass Object
    (
        [bid] => 1
        [uid] => 8
        [total_inc] => 130
        [total_exp] => 75
        [mon] => 1
        [year] => 2012
        [mstdatereg] => 2012-03-14
    )

[3] => stdClass Object
    (
        [bid] => 5
        [uid] => 25
        [total_inc] => 130
        [total_exp] => 65
        [mon] => 2
        [year] => 2012
        [mstdatereg] => 2012-03-14
    )

[4] => stdClass Object
    (
        [bid] => 4
        [uid] => 27
        [total_inc] => 75
        [total_exp] => 50
        [mon] => 2
        [year] => 2012
        [mstdatereg] => 2012-03-14
    )

[5] => stdClass Object
    (
        [bid] => 10
        [uid] => 3
        [total_inc] => 180
        [total_exp] => 100
        [mon] => 3
        [year] => 2012
        [mstdatereg] => 2012-04-05
    )

[6] => stdClass Object
    (
        [bid] => 6
        [uid] => 12
        [total_inc] => 60
        [total_exp] => 35
        [mon] => 3
        [year] => 2012
        [mstdatereg] => 2012-03-14
    )

[7] => stdClass Object
    (
        [bid] => 7
        [uid] => 22
        [total_inc] => 160
        [total_exp] => 90
        [mon] => 3
        [year] => 2012
        [mstdatereg] => 2012-03-14
    )

[8] => stdClass Object
    (
        [bid] => 9
        [uid] => 3
        [total_inc] => 115
        [total_exp] => 70
        [mon] => 4
        [year] => 2012
        [mstdatereg] => 2012-03-16
    )
)

我通过循环所做的结果是这样的：

        January, 2012
        ==========
        Income  Expense
    2   100     55
    3   85      45
    8   130     75
    ---------------------------------
Total   315     175

        February, 2012
        ===========
        Income  Expense
    25  130     65
    27  75      50
    ---------------------------------
Total   205     115

        March, 2012
        Income  Expense
    3   180     100
    12  60      35
    22  160     90
    ---------------------------------
Total   400     225

        April, 2012
        Income  Expense
    3   115     70
    ---------------------------------
Total   115     70

Net Total Income: 1035
Net Total Expense: 585code here

然而我想要的是

Sr.No   Member  1, 2012     2, 2012     3, 2012     4, 2012     Total
                Inc|Exp     Inc|Exp     Inc|Exp     Inc|Exp     Inc|Exp 
=======================================================================
1       2       100|55                                          100|55
2       3       85|45                   180|100     115|70      380|215
3       8       130|75                                          130|75  
4       25                  130|65                              130|65
5       27                  75|50                               75|50
6       12                              60|35                   60|35
7       22                              160|90                  160|90  
=======================================================================
Total           315|175     205|115     400|225     115|70      1035|585

在发布之前，我搜索了这样的问题，这是我发现的：Building a "crosstab" or "pivot" table from an array in php

我试图让它按照我的要求工作，但 cud 不这样做。

已经尝试了很多天了。任何帮助将不胜感激。

Answer 1

我认为使用 SQL 为您完成大部分数字运算会更好。

比较简单的过程，那么：

1. 确定要在表格中表示的月份（列）。
2. 使用 GROUP BY 将您的数据按 Sr. No（或您想使用的任何内容）分成几行
3. 使用 WHERE 子句删除不在您选择的日期范围内的数据（即，如果报告仅针对 2 月和 3 月，则不包括 1 月）
4. Totals 列是给定行的收入或费用的总和（请记住，行是使用您之前选择的标准分组的）
5. 单个月份列是 IF 的总和（日期在该列的月份，金额，0）
6. 总计行在您的 PHP 中计算

您可以通过编程方式生成月份列代码。

下面是一些代码示例，用于为给定的一组月-年组合生成查询（未经测试）。从这里把它放到一个表中很简单（你只需要在 PHP 中计算总计行）。

$qstr = 'SELECT bid, uid, ';
$reportMonths = array(1 => 2012, 2 => 2012, 3 => 2012, 4 => 2012);

foreach ($reportMonths as $mon => $year) {
    $qstr .= "SUM(IF(mon=$mon AND year=$year),total_inc,0)) as $mon-inc, SUM(IF(mon=$mon AND year=$year,total_exp,0)) as $mon-exp, ";
}

$qstr .= 'SUM(total_inc) as total-inc, SUM(total_exp) as total-exp from bill_mst WHERE ';

foreach ($reportMonths as $mon => $year) {
    $qstr .= '(mon=$mon AND year=$year) OR ';
}
// chop off last or
$qstr = substr($qstr, 0, -3);
$qstr .= 'GROUP BY bid, uid ASC';

$res = mysql_query($qstr);