37 lines
850 B
PHP
37 lines
850 B
PHP
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<?php
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namespace Stripe\Util;
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/**
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* A basic random generator. This is in a separate class so we the generator
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* can be injected as a dependency and replaced with a mock in tests.
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*/
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class RandomGenerator
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{
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/**
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* Returns a random value between 0 and $max.
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*
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* @param float $max (optional)
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*
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* @return float
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*/
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public function randFloat($max = 1.0)
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{
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return \mt_rand() / \mt_getrandmax() * $max;
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}
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/**
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* Returns a v4 UUID.
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*
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* @return string
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*/
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public function uuid()
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{
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$arr = \array_values(\unpack('N1a/n4b/N1c', \openssl_random_pseudo_bytes(16)));
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$arr[2] = ($arr[2] & 0x0fff) | 0x4000;
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$arr[3] = ($arr[3] & 0x3fff) | 0x8000;
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return \vsprintf('%08x-%04x-%04x-%04x-%04x%08x', $arr);
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}
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}
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