Add value from one associative array to another based on condition

Question

So far I have three arrays which return values from the database like this (after much formatting)

[0]=>array(
           [0]=>'Apr', [1]=> 1), 
[1]=>array(
           [0]=>'May', [1]=>2), 
[2]=>array(
           [0]=>'Jun', [1]=>23)

The second array with similar values:

[0]=>array(
           [0]=>'Mar', [1]=>22),     
[1]=>array(
           [0]=>'Apr', [1]=> 1), 
[2]=>array(
           [0]=>'May', [1]=>2), 
[3]=>array(
           [0]=>'Jun', [1]=>25)

And the third:

[0]=>array(
           [0]=>'Jan', [1]=>50),     
[1]=>array(
           [0]=>'Feb', [1]=> 20), 
[2]=>array(
           [0]=>'Mar', [1]=>16), 
[3]=>array(
           [0]=>'Jun', [1]=>5)

And this is how I'm trying to make them to be:

[0]=>array(
           [0]=>'Month', [1]=>'Calc1', [2]=>'Calc2', [3]=>'Calc3'),     
[1]=>array(
           [0]=>'Jan', [1]=>0, [2]=>0, [3]=>50), 
[2]=>array(
           [0]=>'Feb', [1]=>0, [2]=>0, [3]=>20), 
[3]=>array(
           [0]=>'Mar', [1]=>0, [2]=>22, [3]=>16),
[4]=>array(
           [0]=>'Apr', [1]=>1, [2]=>1, [3]=>0),
[5]=>array(
           [0]=>'May', [1]=>2, [2]=>2, [3]=>0),
[6]=>array(
           [0]=>'Jun', [1]=>23, [2]=>25, [3]=>5)

Please note how '0' is filled in places where it contains no value. Honestly, this is the most complex array problem I've ever come across and the reason being the difficulty to traverse through the array. I particularly need the array to be this structure because I need to send it to Google Visualization Area Chart.

Please do post if you've found any suggestions for this problem.

Thank you so much in advance :)

@DevZer0 : This is the output I get (with my real data). Please note how the months are repeating:

   array(
        [0] =>
            array(
                  [0] =>'Month'
                  [1] =>'Calc1'
                  [2] =>'Calc2'
                  [3] =>'Calc3'
                 )
        [1] =>
            array(

                  [0] =>'Apr'
                  [1] =>1
                  [2] =>0
                  [3] =>0
                  )
        [2] =>
            array(

                  [0] =>'Jun'
                  [1] =>9
                  [2] =>0
                  [3] =>0
                  )
        [3] =>
            array(

                  [0] =>'Apr'
                  [1] =>0
                  [2] =>1
                  [3] =>0
                  )
        [4] =>
                  array(

                  [0] =>'May'
                  [1] =>0
                  [2] =>2
                  [3] =>0
                  )
        [5] =>
                  array(

                  [0] =>'Jun'
                  [1] =>0
                  [2] =>23
                  [3] =>0
                  )
        [6] =>
                  array(

                  [0] =>'Apr'
                  [1] =>0
                  [2] =>0
                  [3] =>1
                  )
        [7] =>
                  array(

                  [0] =>'May'
                  [1] =>0
                  [2] =>0
                  [3] =>3
                  )
        [8] =>
                  array(

                  [0] =>'Jun'
                  [1] =>0
                  [2] =>0
                  [3] =>27
                  )
)

I would like them concatenated in this format:

    array(
        [0] =>
            array(
                  [0] =>'Month'
                  [1] =>'Calc1'
                  [2] =>'Calc2'
                  [3] =>'Calc3'
                 )
        [1] =>
            array(

                  [0] =>'Apr'
                  [1] =>1
                  [2] =>1
                  [3] =>1
                  )
        [2] =>
            array(

                  [0] =>'May'
                  [1] =>0
                  [2] =>2
                  [3] =>3
                  )

        [3] =>
            array(

                  [0] =>'Jun'
                  [1] =>9
                  [2] =>23
                  [3] =>27
                  )

)

Is there a way to do it? Thank you so much again:)

Answer 1

This is not a difficult problem, if i understand correctly you have arrays which has month and an integer. lets assume you have the 3 arrays called $array1,$array2,$array3

 $arrays = array($array1, $array2, $array3);
 $final = array();
 $index = 1;
 foreach ($arrays as $array) {
     foreach ($array as $ar) {
          if (!isset($final[$ar[0]])) {
              $final[$ar[0]] = array($ar[0], $index => $ar[1]);
          } else {
              $final[$ar[0]][$index] = $ar[1];
          }
     }
     $index++;
 }

 $final = array_values($final);

 for($x=0; $x < count($final); $x++) {
      for($i=1; $i < 4; $i++) {
          if (!isset($final[$x][$i])) $final[$x][$i] = "0";
      }
 }

 $header = array("Month", "Calc1", "Calc2", "Calc3");
 array_unshift($final, $header);

 var_dump($final); //will have your resulting array