how to define the index of array in foreach loop for add/dividing elements of array

**malika** · May 25 '13, 06:26 PM

hi everyone i fetch the array by using foreach loop now how can i define the index of different elements in array for futher computation like i want the element1 of array 1 to be divided by element1 of array 2 code of for each loop

Code:

 <?php

if (isset($_POST['submit'])) {

    $data_t1 = $_POST['t1'];

    foreach ($data_t1 as $key => $value) {

        echo 'T1: ' . $value . '<br />';
        echo 'T2: ' . $_POST['t2'][$key] . '<br />';
          echo 'T3: ' . $_POST['a1'][$key] . '<br />';
        echo 'Username: ' . $_POST['username'][$key] . '<br /><br />';

    }
      $data_t2 = $_POST['t2'];
      $data_t3=$_POST['a1'];
      $data_t4=$_POST['username'];


}
var_dump($data_t1);
var_dump($data_t2);
var_dump($data_t3);
var_dump($data_t4);
?>

now i want these array values to be used for further computation

Code:

echo "Measuring Efficiency ";
echo "<table border='1' align='center'>
<tr>
<th>Inputs</th>
<th>A</th>
<th>B</th>
<th>C</th>
</tr>";
  echo "<tr>";
  foreach($data_t4 as $t4)
  {
  echo $t4;         this display the values of array 4
  }
  foreach($data_t1 as $t1)
  {
  echo $t1;
$r=round(($t1/$t4),2);  
$fr=round(($t1/$t4),2); 
$br=round(($t1/$t4),2); 

echo "<td>" ."Room Size/Consumption". "</td>";
echo "<td>".$r. "</td>";
echo "<td>".$fr. "</td>";
echo "<td>".$br. "</td>";
 echo "</tr>";
  echo "<tr>";
  }

  ?>

how can i define the index of array for division of elements of two array