Update website

admin/phpMyAdmin/libraries/classes/Cache.php

@@ -0,0 +1,74 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpMyAdmin;
+
+use function array_key_exists;
+
+/**
+ * Cache values
+ */
+class Cache
+{
+    /** @var array<string,mixed> */
+    private static $cacheData = [];
+
+    /**
+     * Store a value
+     *
+     * @param string $cacheKey The key to use
+     * @param mixed  $value    The value to cache
+     */
+    public static function set(string $cacheKey, $value): bool
+    {
+        self::$cacheData[$cacheKey] = $value;
+
+        return true;
+    }
+
+    /**
+     * Does the cache have a value stored for the key
+     *
+     * @param string $cacheKey The key to use
+     */
+    public static function has(string $cacheKey): bool
+    {
+        return array_key_exists($cacheKey, self::$cacheData);
+    }
+
+    /**
+     * Get back a cached value
+     *
+     * @param string $cacheKey     The key to use
+     * @param mixed  $defaultValue The default value in case it does not exist
+     *
+     * @return mixed The cached value
+     */
+    public static function get(string $cacheKey, $defaultValue = null)
+    {
+        return self::$cacheData[$cacheKey] ?? $defaultValue;
+    }
+
+    /**
+     * Remove a cached value
+     *
+     * @param string $cacheKey The key to use to remove the value
+     */
+    public static function remove(string $cacheKey): bool
+    {
+        unset(self::$cacheData[$cacheKey]);
+
+        return true;
+    }
+
+    /**
+     * Purge all cached values
+     */
+    public static function purge(): bool
+    {
+        self::$cacheData = [];
+
+        return self::$cacheData === [];
+    }
+}