When are infinite loops are useful in PHP?

Question

While reading through the great online PHP tutorials of Paul Hudson he said

Perhaps surprisingly, infinite loops can sometimes be h

Answer 1

There are many ways to use infinite loops, here is an example of an infinite loop to get 100 random numbers between 1 and 200

$numbers = array();
$amount  = 100;

while(1) {
   $number = rand(1, 200);
   if ( !in_array($number, $numbers) ) {
      $numbers[] = $number;
      if ( count($numbers) == $amount ) {
         break;
      }
   }
}

print_r($numbers);