Adpot PSR-16 simple cache in UrlManager::class. (#46)

Adpot `PSR-16` simple cache in `UrlManager::class`. (#46)

composer.json

@@ -32,12 +32,15 @@
         "ezyang/htmlpurifier": "^4.17",
         "php-forge/foxy":"^0.1",
         "psr/container": "^2.0",
+        "psr/simple-cache": "^3.0",
         "yiisoft/yii2-composer": "^2.0.10"
     },
     "require-dev": {
         "dms/phpunit-arraysubset-asserts": "^0.5",
         "maglnet/composer-require-checker": "^4.7",
-        "phpunit/phpunit": "^9.5"
+        "phpunit/phpunit": "^9.5",
+        "yiisoft/cache": "^3.0",
+        "yiisoft/cache-file": "^3.1"
     },
     "autoload": {
         "psr-4": {

src/caching/CacheKeyNormalizer.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+namespace yii\caching;
+
+use yii\base\InvalidArgumentException;
+
+use function json_encode;
+use function json_last_error_msg;
+use function is_int;
+use function is_string;
+use function md5;
+use function mb_strlen;
+use function strpbrk;
+
+/**
+ * CacheKeyNormalizer normalizes the cache key to a string.
+ */
+final class CacheKeyNormalizer
+{
+    /**
+     * Normalizes the cache key from a given key.
+     *
+     * If the given key is a string that does not contain characters `{}()/\@:` and no more than 64 characters,
+     * then the key will be returned back as it is, integers will be converted to strings. Otherwise,
+     * a normalized key is generated by serializing the given key and applying MD5 hashing.
+     *
+     * @see https://www.php-fig.org/psr/psr-16/#12-definitions
+     *
+     * @param mixed $key the key to be normalized.
+     *
+     * @throws InvalidArgumentException for invalid key.
+     *
+     * @return string the normalized cache key.
+     */
+    public static function normalize(mixed $key): string
+    {
+        if (is_string($key) || is_int($key)) {
+            $key = (string) $key;
+            $length = mb_strlen($key, '8bit');
+            return (strpbrk($key, '{}()/\@:') || $length < 1 || $length > 64) ? md5($key) : $key;
+        }
+
+        if (($key = json_encode($key)) === false) {
+            throw new InvalidArgumentException('Invalid key. ' . json_last_error_msg());
+        }
+
+        return md5($key);
+    }
+}