<?php
require_once "mersenne_twister.php";
use mersenne_twister\twister;
#--------------------------------------------
$twister1 = new twister(42);
$twister2 = new twister(42);
/*
42 is a seed for initialising
the random-number generator.
*/
for ($i = 0; $i < 10; $i++) {
# int32 returns a random 32-bit integer
if ($twister1->int32() !== $twister2->int32()) {
print "They're different -- " . "this is not supposed to happen!\n";
}
}
#--------------------------------------------
$num_iters = 1000;
$twister3 = new twister(42);
$saved = serialize($twister3);
$sum = 0;
for ($i = 0; $i < $num_iters; $i++) {
$sum += $twister3->rangereal_halfopen(10, 20);
}
/*
the call to rangereal_halfopen produces a
floating-point number >= 10 and < 20
*/
print "This is the average, " . "which should be about 15: " . $sum / $num_iters . "\n";
$twister3 = unserialize($saved);
