Question

I have a associative array and i wanted to print out all the column values at once rather by each row

Example if i have a array of

1.1, 1.2, 1.3, 1.4 
2.1, 2.2, 2.3, 2.4 
3.1, 3.2, 3.3, 3.4 

Currently is displaying 1.1 1.2 1.3 1.4 then 2.1 2.2 2.3 2.4 …etc

but I wanted to display 1.1 ,2.1, 3.1 then 1.2 2.2 3.2 … etc

In c++ i know you have to use nested for loop in order to achieve this

for (int i=0; i< col_size; i++) 
{ 
    for (int j=0; j < row_size; j++) 
    { 
        cout << a[i][j]; 
    } 
} 

But how can it be done using associative array in PHP?

Thanks so much!

Answer 1

<?php
$array = array(array(1.1, 1.2, 1.3, 1.4), array(2.1, 2.2, 2.3, 2.4), array(3.1, 3.2, 3.3, 3.4));


$_rows = sizeof($array);
$_cols = sizeof($array[0]);

for ($i=0; $i<=$_cols; $i++) 
  {
    for($j = 0;$j<=$_rows; $j++)
      {
        echo $array[$j][$i]. " ";
      }
      echo " \n";
  }
?>

Outputs

1.1 2.1 3.1    
1.2 2.2 3.2    
1.3 2.3 3.3    
1.4 2.4 3.4    

See http://codepad.org/I2AysS5X

Note the [$j][$i] instead of [$i][$j]