Choose between two items based upon a given percentage

Question

I need to display one of two items in an array based up on a 40/60% ratio. So, 40% of the time, item one displays and 60% of the time, item two displays.

I now have the following code that will just randomly choose between the two, but need a way to add the percentage weight to it.

$items = array("item1","item2");
$result = array_rand($items, 1);

echo $items[$result];

Any help would be appreciated. Thanks!

Answer 1

Something like that should do the trick

$result = $items[ rand(1, 100) > 40 ? 1 : 0 ];

Answer 2

$val = rand(1,100);
if($val <= 40)
  return $items[0]; 
else 
  return $items[1];