init: PHP Config Class

Config.php

@@ -0,0 +1,85 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: Jordy
+ * Date: 2019/12/5
+ * Time: 6:03 PM
+ */
+
+namespace All\Config;
+
+use Ali\InstanceTrait;
+use All\Exception\WarnException;
+
+class Config
+{
+    use InstanceTrait;
+
+    private $path;
+    private $data;
+
+    public function setPath($path)
+    {
+        $this->path = $path;
+        return $this;
+    }
+
+    /**
+     * @return mixed
+     * @throws WarnException
+     */
+    public function getPath()
+    {
+        if (!$this->path) {
+            throw new WarnException('Config path is not configured');
+        }
+        return $this->path;
+    }
+
+    /**
+     * @param string $key example: db/default.master.host
+     * @return array|null
+     * @throws \Exception
+     */
+    public function get($key)
+    {
+        list($file, $keys) = $this->parseKey($key);
+        $data = $this->getData($file);
+        if (!$keys || !$data) {
+            return $data;
+        }
+        foreach ($keys as $key) {
+            if (!is_array($data) || !isset($data[$key])) {
+                return null;
+            }
+            $data = $data[$key];
+        }
+        return $data;
+    }
+
+    /**
+     * @param $file
+     * @return array|null
+     * @throws WarnException
+     */
+    private function getData($file)
+    {
+        if (isset($this->data[$file])) {
+            return $this->data[$file];
+        }
+        $filePath = $this->getPath() . DIRECTORY_SEPARATOR . $file . '.php';
+        if (!is_file($filePath) || !is_readable($filePath)) {
+            return null;
+        }
+        $data = include $filePath;
+        $data = $data && is_array($data) ? $data : [];
+        return $this->data[$file] = $data;
+    }
+
+    private function parseKey($key)
+    {
+        $keys = explode('.', $key);
+        $file = trim(array_shift($keys), '/');
+        return [$file, $keys];
+    }
+}

README.md

@@ -1,2 +1,12 @@
 # php-config
 PHP 配置类
+
+## Usage
+
+```php
+<?php
+$config = Config::getInstance();
+$config->setPath('./');
+
+$data = $config->get('path1/filename.level1.level2');
+```

composer.json

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+{
+    "name": "boxunphp/php-config",
+    "description": "PHP 配置类",
+    "type": "library",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Jordy",
+            "email": "arno.zheng@gmail.com"
+        }
+    ],
+    "minimum-stability": "dev",
+    "require-dev": {
+        "phpunit/phpunit": "7.*"
+    },
+    "require": {
+        "php": "^7.1",
+        "boxunsoft/php-instance": "^v1.1.0",
+        "boxunphp/php-exception": "^v1.0.0"
+    },
+    "autoload": {
+        "psr-4": {
+            "All\\Config\\": ""
+        }
+    }
+}