Refactoring classes into src/ folder, so they will be auto-loaded by composer

system/src/Cache/PHP.php

@@ -0,0 +1,83 @@
+<?php
+/**
+ * PHP cache class
+ *
+ * @package   MyAAC
+ * @author    Slawkens <slawkens@gmail.com>
+ * @copyright 2019 MyAAC
+ * @link      https://my-aac.org
+ */
+
+namespace MyAAC\Cache;
+
+class PHP
+{
+	private $prefix;
+	private $dir;
+	private $enabled;
+
+	public function __construct($prefix = '', $dir = '')
+	{
+		$this->prefix = $prefix;
+		$this->dir = $dir;
+		$this->enabled = (file_exists($this->dir) && is_dir($this->dir) && is_writable($this->dir));
+	}
+
+	public function set($key, $var, $ttl = 0)
+	{
+		$var = var_export($var, true);
+
+		// Write to temp file first to ensure atomicity
+		$tmp = $this->dir . "tmp_$key." . uniqid('', true) . '.tmp';
+		file_put_contents($tmp, '<?php $var = ' . $var . ';', LOCK_EX);
+
+		$file = $this->_name($key);
+		rename($tmp, $file);
+
+		if ($ttl === 0) {
+			$ttl = 365 * 24 * 60 * 60; // 365 days
+		}
+
+		touch($file, time() + $ttl);
+	}
+
+	public function get($key)
+	{
+		$tmp = '';
+		if ($this->fetch($key, $tmp)) {
+			return $tmp;
+		}
+
+		return '';
+	}
+
+	public function fetch($key, &$var)
+	{
+		$file = $this->_name($key);
+		if (!file_exists($file) || filemtime($file) < time()) {
+			return false;
+		}
+
+		@include $file;
+		$var = isset($var) ? $var : null;
+		return true;
+	}
+
+	public function delete($key)
+	{
+		$file = $this->_name($key);
+		if (file_exists($file)) {
+			unlink($file);
+		}
+	}
+
+	public function enabled()
+	{
+		return $this->enabled;
+	}
+
+	private function _name($key)
+	{
+		return sprintf('%s%s%s', $this->dir, $this->prefix, sha1($key) . '.php');
+	}
+}