In need of a bit of help with this program

Hi all i'm developing a console mode program that will prompt the user for a start and end number and then display all numbers in order between the start and end number. So for example if a user types in 10 for the start and 20 for the end it should come out like this,

10,11,12,13,14,15,16,17,18,19,20

Heres the code so far i know i've probably made an amatuer mistake any help would be much appreciated.

#!/usr/local/bin/php -q
<?php
//phpprogram.php
require ("phpio");
print("\n\n");
print ("enter start number : ");
$start = input();
print("\n\n");
print ("enter end number : ");
$end = input();
while ($end <=$end)
{
  print("\n  ");
  print($start);
  $start = $end +1;
}
print("\n\n   ");
?>

Code (markup):

Thanks.

 

echo implode(',', range($start, $end));

PHP:

 

Thanks i got it working but now it's doing a continuous loop. This is what the code looks like now not sure if i placed it incorrectly or not?

#!/usr/local/bin/php -q
<?php
//phpprogram.php
require ("phpio");
print("\n\n");
print ("enter start number : ");
$start = input();
print("\n\n");
print ("enter end number : ");
$end = input();
while ($start <=$end)
{
  print("\n");
  echo implode(',', range($start, $end));
}
print("\n\n   ");
?>

Code (markup):

 

You don't need a loop with the range function. It will create the output you want on it's own.

 

Thanks to you both it's working properly now.