[SOLVED] only one of each number

[XpertWorlock]

Hi, I have a string with a length of 5, I need it to only contain 4,5,6,7,9.

 

[45679]{5}

 

This works perfect in that aspect.

 

Now I need it to only contain each number once.

 

Example:

 

 

97654, good

44459, bad

45679, good

66759, bad

 

 

Thanks a lot

 

[Ken2k7]

Quick play

function blah ($num) {
$str = strval($num);
$arr = str_split($str);
$unique = array_unique($arr);
return sizeof($arr) === sizeof($unique);
}

[XpertWorlock]

that works 

 

Awesome thanks

couldn't find it anywhere else