提交代码

vendor/ramsey/uuid/src/Generator/RandomBytesGenerator.php

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+<?php
+/**
+ * This file is part of the ramsey/uuid library
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
+ * @license http://opensource.org/licenses/MIT MIT
+ * @link https://benramsey.com/projects/ramsey-uuid/ Documentation
+ * @link https://packagist.org/packages/ramsey/uuid Packagist
+ * @link https://github.com/ramsey/uuid GitHub
+ */
+
+namespace Ramsey\Uuid\Generator;
+
+/**
+ * RandomBytesGenerator provides functionality to generate strings of random
+ * binary data using `random_bytes()` function in PHP 7+ or paragonie/random_compat
+ *
+ * @link http://php.net/random_bytes
+ * @link https://github.com/paragonie/random_compat
+ */
+class RandomBytesGenerator implements RandomGeneratorInterface
+{
+    /**
+     * Generates a string of random binary data of the specified length
+     *
+     * @param integer $length The number of bytes of random binary data to generate
+     * @return string A binary string
+     * @throws \Exception if it was not possible to gather sufficient entropy
+     */
+    public function generate($length)
+    {
+        return random_bytes($length);
+    }
+}