Simple but nice sorting question

Hi mates, my question is,

I have 3 different values which are given by another person.

$value1 = "blabla bla";
$value2 = "blabla bla bla";
$value3 = "blabla bla bla bla";

I have to echo them from longest to shortest. If two values have same length, doesnt matter which one comes firt.

How to do that ? Thanks

 

Maybe this example will help you:

<?php
function sort_by_length($value1,$value2){
  $value1_length = strlen($value1);
  $value2_length = strlen($value2);

  if($value1_length<$value2_length){
    return 1;
  }elseif($value1_length==$value2_length){
    return 0;
  }else{
    return -1;
  }
}

$value1 = "blabla bla";
$value2 = "blabla bla bla";
$value3 = "blabla bla bla bla";

$array = array($value2,$value1,$value3);

usort($array, 'sort_by_length');

print_r($array);
?>

Code (markup):

 

Thanks a lot!.