Heim > Backend-Entwicklung > PHP-Tutorial > 一个非常完美的读写ini格式的PHP配置类分享_PHP

一个非常完美的读写ini格式的PHP配置类分享_PHP

WBOY
Freigeben: 2016-05-31 13:17:04
Original
918 Leute haben es durchsucht

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;
  }
 }
 }
}
Nach dem Login kopieren

简单使用:

$_ENV ['config'] = new Config ( file_get_contents ( __DIR__ . '/config.ini' ), array (
 'development' => array (
  'localhost.localdomain',
  'localhost'
 ),
 'production' => array ()
) );

Nach dem Login kopieren

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
Nach dem Login kopieren

Verwandte Etiketten:
Quelle:php.cn
Erklärung dieser Website
Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn
Beliebte Tutorials
Mehr>
Neueste Downloads
Mehr>
Web-Effekte
Quellcode der Website
Website-Materialien
Frontend-Vorlage