一个非常完美的读写ini格式的PHP配置类分享
发布:smiling 来源: PHP粉丝网 添加日期:2021-05-13 11:24:49 浏览: 评论:0
这篇文章主要介绍了一个非常完美的读写ini格式的PHP配置类分享,本文给出类代码、使用例子和配置文件例子,需要的朋友可以参考下
基本满足所有配置相关的需求。
- /**
- * 解析.ini格式的配置文件为一个树形结构的对象
- * 配置文件不同section通过冒号继承
- * 默认根据hostname确定使用的section,如果不能确定就优先使用production
- * 检测环境的时候总是优先检测production,其余section按定义顺序检测
- *
- * @author ares@phpdr.net
- *
- */
- class Config {
- /**
- * 解析后的配置文件
- *
- * @var stdClass
- */
- private $config;
- /**
- * 一个二维数组,键是配置文件的section
- * 值是一个数组或回调函数
- * 如果是数组则计算hostname是否在数组中决定是否使用该section
- * 如果是回调函数通过返回值true或false来确定是否使用该section
- *
- * @var array
- */
- private $map = array ();
- /**
- * section会被解析,:表示继承
- * 配置项中的'.'用来区分层级关系
- * section中的'.'不会被解析,配置中的数组不受影响。
- *
- * @param string $conf
- * @throws ErrorException
- * @return stdClass
- */
- function __construct($conf, $map) {
- $config = $this->parseIni ( ( object ) parse_ini_string ( $conf, true ) );
- if (array_key_exists ( 'production', $map )) {
- $production = $map ['production'];
- unset ( $map ['production'] );
- $map = array_merge ( array (
- 'production' => $production ), $map );
- } else {
- throw new ErrorException ( 'production section not found in config' );
- }
- $section = 'production';
- $hostname = gethostname ();
- foreach ( $map as $k => $v ) {
- if (is_array ( $v )) {
- foreach ( $v as $v1 ) {
- if ($v1 == $hostname) {
- $section = $k;
- break 2;
- }
- }
- } elseif (is_callable ( $v )) {
- if (true == call_user_func ( $v )) {
- $section = $k;
- break;
- }
- } else {
- throw new ErrorException ( 'Wrong map value in ' . __CLASS__ );
- }
- }
- $this->config = $config->$section;
- }
- /**
- * 总是返回配置对象
- *
- * @return mixed
- */
- function __get($key) {
- if (isset ( $this->config->$key )) {
- return $this->config->$key;
- }
- }
- /**
- * 切分
- *
- * @param stdClass $v
- * @param string $k1
- * @param mixed $v1
- */
- private function split($v, $k1, $v1) {
- $keys = explode ( '.', $k1 );
- $last = array_pop ( $keys );
- $node = $v;
- foreach ( $keys as $v2 ) {
- if (! isset ( $node->$v2 )) {
- $node->$v2 = new stdClass ();
- }
- $node = $node->$v2;
- }
- $node->$last = $v1;
- if (count ( $keys ) > 0) {
- unset ( $v->$k1 );
- }
- }
- /**
- * parseIni
- *
- * @param object $conf
- * @return stdClass
- */
- private function parseIni($conf) {
- $confObj = new stdClass ();
- foreach ( $conf as $k => $v ) {
- // 是section
- if (is_array ( $v )) {
- $confObj->$k = ( object ) $v;
- foreach ( $v as $k1 => $v1 ) {
- call_user_func ( array (
- $this,
- 'split' ), $confObj->$k, $k1, $v1 );
- }
- } else {
- call_user_func ( array (
- $this,
- 'split' ), $confObj, $k, $v );
- }
- }
- unset ( $conf );
- // 处理继承
- foreach ( $confObj as $k => $v ) {
- if (false !== strpos ( $k, ':' )) {
- if (0 === strpos ( $k, ':' )) {
- throw new ErrorException ( 'config ' . $k . ' is invalid, ':' can't be the first char' );
- } elseif (1 < substr_count ( $k, ':' )) {
- throw new ErrorException ( 'config ' . $k . ' is invalid, ':' can appear only once' );
- } else {
- $keys = explode ( ':', $k );
- if (! isset ( $confObj->$keys [1] )) {
- throw new ErrorException ( 'parent section ' . $keys [1] . ' doesn't exist in config file' );
- } else {
- if (isset ( $confObj->$keys [0] )) {
- throw new ErrorException ( 'config is invalid, ' . $keys [0] . ' and ' . $k . ' conflicts' );
- } else {
- $confObj->$keys [0] = $this->deepCloneR ( $confObj->$keys [1] );
- $this->objectMergeR ( $confObj->$keys [0], $v );
- unset ( $confObj->$k );
- }
- }
- }
- }
- }
- return $confObj;
- }
- /**
- * php默认是浅克隆,函数实现深克隆
- *
- * @param object $obj
- * @return object $obj
- */
- private function deepCloneR($obj) {
- $objClone = clone $obj;
- foreach ( $objClone as $k => $v ) {
- if (is_object ( $v )) {
- $objClone->$k = $this->deepCloneR ( $v );
- }
- }
- return $objClone;
- }
- /**
- * 递归的合并两个对象
- *
- * @param unknown $obj1
- * @param unknown $obj2
- */
- private function objectMergeR($obj1, $obj2) {
- foreach ( $obj2 as $k => $v ) {
- if (is_object ( $v ) && isset ( $obj1->$k ) && is_object ( $obj1->$k )) {
- $this->objectMergeR ( $obj1->$k, $v );
- } else {
- $obj1->$k = $v;
- }
- }
- }
- }
简单使用:
- $_ENV ['config'] = new Config ( file_get_contents ( __DIR__ . '/config.ini' ), array (
- 'development' => array (
- 'localhost.localdomain',
- 'localhost'
- ),
- 'production' => array ()
- ) );
配置文件示例:
- [product]
- db.default.dsn="mysql:host=127.0.0.1;dbname=default"
- db.default.username=root
- db.default.password=123456
- admin.username=admin
- admin.password=123456
- php.error_reporting=E_ALL
- php.display_errors=no
- php.log_errors=yes
- php.error_log=APP_PATH'/resource/log/phpError.log'
- php.session.save_path=APP_PATH'/resource/data/session'
- [development:product]
- db.test1.dsn="mysql:host=127.0.0.1;dbname=test1"
- db.test1.username=root
- db.test1.password=123456
- php.display_errors=yes
Tags: ini PHP配置类
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