<?php
namespace Stripe\StripeTaxForWooCommerce\SDK\lib\Util;
/**
* A basic random generator. This is in a separate class so we the generator
* can be injected as a dependency and replaced with a mock in tests.
*/
class RandomGenerator {
/**
* Returns a random value between 0 and $max.
*
* @param float $max (optional)
*
* @return float
*/
public function randFloat( $max = 1.0 ) {
return \mt_rand() / \mt_getrandmax() * $max;
}
/**
* Returns a v4 UUID.
*
* @return string
*/
public function uuid() {
$arr = \array_values( \unpack( 'N1a/n4b/N1c', \openssl_random_pseudo_bytes( 16 ) ) );
$arr[2] = ( $arr[2] & 0x0FFF ) | 0x4000;
$arr[3] = ( $arr[3] & 0x3FFF ) | 0x8000;
return \vsprintf( '%08x-%04x-%04x-%04x-%04x%08x', $arr );
}
}