how to get 3 unique random number out of 10

[sacox]

I want to get 3 unique random number out of 10

But I couldn't get the result with this script:

<?php

print(mt_rand(1,10));print("<br />");

print(mt_rand(1,10));print("<br />");

print(mt_rand(1,10));print("<br />");

?>

This script sometimes produce duplicate number

[The Little Guy]

You could do it like this:

 

$arr = array();

while(true){
     $rand = mt_rand(1, 10);
     if(!in_array($rand, $arr)){
          $arr[] = $rand;
     }
     if(count($arr) == 3){
          break;
     }
}

print_r($arr);

[ignace]

Or

 

$array = range(0, 10);
$keys = array_rand($array, 3);
echo $array[$keys[0]];
echo $array[$keys[1]];
echo $array[$keys[2]];

 

I'm not sure these are unique.

[salathe]

I'm not sure these are unique.

The same key will not be returned more than once from array_rand: so yes, in that case they would be unique.

[ignace]

Ok thanks salathe already thought they would. Not sure, manual does not tell explicitly. And congrats with your recent promotion.