| public static randomInts ( integer $numInts, callable $cb, integer $pri, boolean $hang = false ) : integer | ||
| $numInts | integer | Number of integers |
| $cb | callable | Callback |
| $pri | integer | Priority of EIO operation |
| $hang | boolean | If true, we shall use /dev/random instead of /dev/urandom and it may cause a delay |
| return | integer | |
public static function randomInts($numInts, $cb, $pri = 0, $hang = false)
{
static::randomBytes(PHP_INT_SIZE * $numInts, function ($bytes) use($cb, $numInts) {
if ($bytes === false) {
$cb(false);
return;
}
$ints = [];
for ($i = 0; $i < $numInts; ++$i) {
$thisInt = 0;
for ($j = 0; $j < PHP_INT_SIZE; ++$j) {
$thisInt = $thisInt << 8 | ord($bytes[$i * PHP_INT_SIZE + $j]) & 0xff;
}
// Absolute value in two's compliment (with min int going to zero)
$thisInt = $thisInt & PHP_INT_MAX;
$ints[] = $thisInt;
}
$cb($ints);
}, $pri, $hang);
} /**
* @covers Crypt::randomInts
*/
public function testRandomInts()
{
$this->prepareAsync();
Crypt::randomInts(5, function ($ints) {
self::assertCount(5, $ints, '$ints must contain 5 elements');
$this->completeAsync();
});
$this->runAsync(__METHOD__);
}
