Rows into columns and / or crosstabbing array in php - php

Question

I have this billing table from wherein I get records as per the report requirement.
The array I get is like this:
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
)
)
What I have done through looping is the result which is like this:
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
However what I want is
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
Prior to posting, I searched for such problem and this is what I found: Building a "crosstab" or "pivot" table from an array in php
I tried to make it work according to my requirement but cud not do so.
Been trying for many days now. Any help will be appreciated.

Answer 1

I think you'll have better luck using SQL to do most of this number crunching for you.
Relatively simple process, then:
Determine the months (columns) you want to represent in the table.
Use GROUP BY to break your data into rows by Sr. No (or whatever you want to use)
Use WHERE clause to cut out data that's not in the date range you've chosen (i.e. if Report is only for Feb & March, don't include Jan)
Totals column is sum of Income or Expense for given row (remember, rows are grouped using criteria you chose earlier)
Individual month column is sum of IF(Date is in this column's month, Amount, 0)
Totals row is calculated in your PHP
You can generate the month column code programmatically.
Below's an example of some code to generate the query for a given set of month-year combos (untested). It's trivial to get it into a table from here (you just need to calculate the totals row in PHP).
$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);