<?php
function column_Sort($unsorted, $column) { 
    $sorted = $unsorted; 
    for ($i=0; $i < sizeof($sorted)-1; $i++) { 
      for ($j=0; $j<sizeof($sorted)-1-$i; $j++) 
        if ($sorted[$j][$column] > $sorted[$j+1][$column]) { 
          $tmp = $sorted[$j]; 
          $sorted[$j] = $sorted[$j+1]; 
          $sorted[$j+1] = $tmp; 
      } 
    } 
    return $sorted; 
} 
$my_array = array(); 
$my_array[0]['name'] = 'Sana'; 
$my_array[0]['email'] = 'sana@example.com'; 
$my_array[0]['phone'] = '111-111-1234'; 
$my_array[0]['country'] = 'USA'; 

$my_array[1]['name'] = 'Robin'; 
$my_array[1]['email'] = 'robin@example.com'; 
$my_array[1]['phone'] = '222-222-1235'; 
$my_array[1]['country'] = 'UK'; 

$my_array[2]['name'] = 'Sofia'; 
$my_array[2]['email'] = 'sofia@example.com'; 
$my_array[2]['phone'] = '333-333-1236'; 
$my_array[2]['country'] = 'India'; 
print_r(column_Sort($my_array, 'name')); 
?>