first commit

system/Cache/FactoriesCache/FileVarExportHandler.php

@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\Cache\FactoriesCache;
+
+final class FileVarExportHandler
+{
+    private string $path = WRITEPATH . 'cache';
+
+    /**
+     * @param array|bool|float|int|object|string|null $val
+     */
+    public function save(string $key, $val): void
+    {
+        $val = var_export($val, true);
+
+        // Write to temp file first to ensure atomicity
+        $tmp = $this->path . "/{$key}." . uniqid('', true) . '.tmp';
+        file_put_contents($tmp, '<?php return ' . $val . ';', LOCK_EX);
+
+        rename($tmp, $this->path . "/{$key}");
+    }
+
+    public function delete(string $key): void
+    {
+        @unlink($this->path . "/{$key}");
+    }
+
+    /**
+     * @return array|bool|float|int|object|string|null
+     */
+    public function get(string $key)
+    {
+        return @include $this->path . "/{$key}";
+    }
+}