mt_rand_value.phpt   [plain text]

--TEST--
Test mt_rand() output
--FILE--
<?php

mt_srand(12345678, MT_RAND_PHP);

for ($i=0; $i<16; $i++) {
    echo mt_rand().PHP_EOL;
}
echo PHP_EOL;

$x = 0;
for ($i=0; $i<1024; $i++) {
    $x ^= mt_rand();
}
echo $x.PHP_EOL;
echo PHP_EOL;

mt_srand(12345678 /*, MT_RAND_MT19937 */);

for ($i=0; $i<16; $i++) {
    echo mt_rand().PHP_EOL;
}
echo PHP_EOL;

$x = 0;
for ($i=0; $i<1024; $i++) {
    $x ^= mt_rand();
}
echo $x.PHP_EOL;

/*
 * Note that the output will be different from the original mt19937ar.c,
 * because PHP's implementation contains a bug. Thus, this test actually
 * checks to make sure that PHP's behaviour is wrong, but consistently so.
 */

?>
--EXPECTF--
1614640687
1711027313
857485497
688176834
1386682158
412773096
813703253
898651287
2087374214
1382556330
1640700129
1863374167
1324097651
1923803667
676334965
853386222

1571178311

527860569
1711027313
1280820687
688176834
770499160
412773096
813703253
898651287
52508912
757323740
511765911
274407457
833082629
1923803667
1461450755
1301698200

1612214270