Big integer random performance. Using rand() function and looping.

big_integer_random.php

<?php
  $t1Start  = microtime(true);
  $rand1    = rand(100000, 1000000);
  $t1End    = microtime(true);
  
  //sleep(3);
  $rand2    = '';
  $length   = 6;

  $t2Start  = microtime(true);
  for ($x = 0; $x < $length; ++$x, $rand2.=rand(0,9));
  $t2End    = microtime(true);

  echo 'First  Random: Value(', $rand1, '), Start(', $t1Start, '), End(', $t1End, '), Diff(', ($t1End-$t1Start), ")\n";
  echo 'Second Random: Value(', $rand2, '), Start(', $t2Start, '), End(', $t2End, '), Diff(', ($t2End-$t2Start), ")\n";
?>