[SOLVED] Whats the best way...

[EchoFool]

I have 6 variables that i want to check none of them hold the same number so they are all unique to each other.

 

What is the most efficient way to do this? Surely tons of if statements is not the best way to do about this? Is there a function to check all the vars for identical values at all ?

[obsidian]

The best way would be to use an array. You can then use methods such as array_unique() on it to see what you get.

[EchoFool]

Ok thank you, would array_unique return TRUE or FALSE when it is unique?

[pocobueno1388]

Ok thank you, would array_unique return TRUE or FALSE when it is unique?

 

http://us3.php.net/array_unique

[obsidian]

Ok thank you, would array_unique return TRUE or FALSE when it is unique?

 

Hmm... no, it actually returns you an array of the unique elements. You might be better off with manually parsing your array if you simply want a boolean value. Try something like this:

<?php
function checkUnique($arr)
{
  $tmp = array();
  foreach ($arr as $v)
  {
    if (in_array($tmp))
    {
      return false;
    }
    $tmp[] = $v;
  }
  return true;
}
?>

[CroNiX]

Couldn't you also get the size of the original array, run an array_unique and compare the sizes?  They should be the same if there are no duplicates.

 

$a = array(1,2,2,3,4);
$b = array_unique($a);

if(sizeof($a) == sizeof($b)) {
    echo 'All values are unique';
} else {
    echo 'There are duplicate value(s)';
}

 

I didn't try this, but I would think it would work.