Using associative arrays to display records from mysql into table dynamically

Question

I'm trying to build a table like so dynamically from query

Here is a query

SELECT MONTH(c.pat_added_date) AS month, COUNT(a.ana_id) as total,
YEAR(c.pat_added_date) AS year FROM lab_patient_analysis AS b

                      LEFT JOIN lab_analysis AS a

                      ON a.ana_id = b.ana_id



                      LEFT JOIN lab_patients AS c

                      ON c.pat_id = b.pat_id



                      WHERE 

                      a.ana_id = '3' AND 

                      YEAR(c.pat_added_date) BETWEEN '2012' AND '2013'

                      GROUP BY MONTH(c.pat_added_date)

                      ORDER BY YEAR(c.pat_added_date), MONTH(c.pat_added_date)

and here is what query returns

month | total | year

1         13     2012

7         9      2012

8         33     2012

3         21     2013

6         8      2013

....

here is a php function I've used for arrays

function array_set(&$a, $path, $value) {

    if(!is_array($path))

        $path = explode($path[0], substr($path, 1));

    $key = array_pop($path);

    foreach($path as $k) {

        if(!isset($a[$k]))

            $a[$k] = array();

        $a = &$a[$k];

    }

    $a[$key ? $key : count($a)] = $value;

}

and the point where I'm stuck

$yr = null;

while($row ... ))

{

 if($yr != $row['year']) {

   $yr = $row['year'];

   array_set($array, array($row['year'], $row['month']), $row['total']);

   echo '</tr></tr>';

   echo '<th scope="row">'.$row['year'].'</th>';

 }



 echo '<td>'.$row['total'];

}

arrays returned

Array

(

    [2012] => Array

        (

            [1] => 13

            [7] => 9

            [8] => 33

        )



    [2013] => Array

        (

            [3] => 21

            [6] => 8

        )



)

And I would like to produce the following table

        Jan| Feb| Mar | Apr | May | Jun | Jul | Sep | Oct | Nov | Dec

  2012   13   0    0     0     0     0     9    33     0     0     0

  2013   0    0    21    0     0     8     0     0     0     0     0

Hope that makes sense

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Answer 1

I've managed to get this out of it:

<?php

// Build source array.. You should already have this layout by the looks of it.

$array = array('2012' => array("1" => 13, "7" => 9, "8" => 33),
                '2013' => array("3" => 21, "6" => 8));

// Loop over every year.

foreach ($array as $year => $values) {

        for ($i = 1; $i <= 12; $i++) { // Loop through months 1 .. 12

                if (!$values[$i]) { // If there is no value for this month, pad it with 0 (Note string "0", else it leaves it empty)
                        $array[$year][$i] = "0";
                }
        }

        // Sort it out, probably won't need this actually, but it doesn't hurt to have it.
        ksort($array[$year], SORT_NATURAL);
}

// Print out the array 
var_dump($array);

I get this output:

array(2) {
  [2012]=>
  array(12) {
    [1]=>
    int(13)
    [2]=>
    string(1) "0"
    [3]=>
    string(1) "0"
    [4]=>
    string(1) "0"
    [5]=>
    string(1) "0"
    [6]=>
    string(1) "0"
    [7]=>
    int(9)
    [8]=>
    int(33)
    [9]=>
    string(1) "0"
    [10]=>
    string(1) "0"
    [11]=>
    string(1) "0"
    [12]=>
    string(1) "0"
  }
  [2013]=>
  array(12) {
    [1]=>
    string(1) "0"
    [2]=>
    string(1) "0"
    [3]=>
    int(21)
    [4]=>
    string(1) "0"
    [5]=>
    string(1) "0"
    [6]=>
    int(8)
    [7]=>
    string(1) "0"
    [8]=>
    string(1) "0"
    [9]=>
    string(1) "0"
    [10]=>
    string(1) "0"
    [11]=>
    string(1) "0"
    [12]=>
    string(1) "0"
  }
}

Using associative arrays to display records from mysql into table dynamically

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