PHP读取配置文件类实例(可读取ini,yaml,xml等)_PHP教程

PHP读取配置文件类实例(可读取ini,yaml,xml等)

2020-11-10 16:54mickelfeng PHP教程

这篇文章主要介绍了PHP读取配置文件类,可读取ini,yaml,xml等配置文件,具有一定参考借鉴价值,需要的朋友可以参考下

本文实例讲述了PHP 读取配置文件类实例。分享给大家供大家参考。具体如下：

									<?php 

									class Settings { 

									 var $_settings = array (); 

									 function get($var) { 

									 $var = explode ( '.', $var ); 

									 $result = $this->_settings; 

									 foreach ( $var as $key ) { 

									  if (! isset ( $result [$key] )) { 

									  return false; 

									  }  

									  $result = $result [$key]; 

									 }  

									 return $result; 

									 } 

									 function load() { 

									 trigger_error ( 'Not yet implemented', E_USER_ERROR ); 

									 } 

									} 

									class Settings_PHP extends Settings { 

									 function load($file) { 

									 if (file_exists ( $file ) == false) { 

									  return false; 

									 } 

									 // Include file 

									 include ($file); 

									 unset ( $file ); 

									 // Get declared variables 

									 $vars = get_defined_vars (); 

									 // Add to settings array 

									 foreach ( $vars as $key => $val ) { 

									  if ($key == 'this') 

									  continue;  

									  $this->_settings [$key] = $val; 

									 } 

									 } 

									} 

									class Settings_INI extends Settings { 

									 function load($file) { 

									 if (file_exists ( $file ) == false) { 

									  return false; 

									 } 

									 $this->_settings = parse_ini_file ( $file, true ); 

									 } 

									} 

									class Settings_YAML extends Settings { 

									 function load($file) { 

									 if (file_exists ( $file ) == false) { 

									  return false; 

									 } 

									 include ('spyc.php'); 

									 $this->_settings = Spyc::YAMLLoad ( $file ); 

									 } 

									} 

									class Settings_XML extends Settings { 

									 function load($file) { 

									 if (file_exists ( $file ) == false) { 

									  return false; 

									 } 

									 include ('xmllib.php'); 

									 $xml = file_get_contents ( $file ); 

									 $data = XML_unserialize ( $xml ); 

									 $this->_settings = $data ['settings']; 

									 } 

									} 

									?>

									/** 

									* 针对PHP的配置,如有配置文件 

									*config.php 

									<?php 

									$db = array(); 

									// Enter your database name here: 

									$db['name'] = 'test'; 

									// Enter the hostname of your MySQL server: 

									$db['host'] = 'localhost'; 

									?> 

									//具体调用: 

									include ('settings.php'); //原始环境假设每个类为单独的一个类名.php文件 

									// Load settings (PHP) 

									$settings = new Settings_PHP; 

									$settings->load('config.php'); 

									echo 'PHP: ' . $settings->get('db.host') . ''; 

									* 

									*/

									 读取INI文件,主要用到parser_ini_file函数,该函数返回一个数组,如第二个参数为true时则返回多维数组

									/** 

									* ini例子:config.ini 

									* 

									[db] 

									name = test 

									host = localhost 

									//调用例子: 

									$settings = new Settings_INI; 

									$settings->load('config.ini'); 

									echo 'INI: ' . $settings->get('db.host') . ''; 

									*/

									 读取XML文件,需要用到XML_PARSER，xmllib.php

									/** 

									* XML例子:config.xml 

									<?xml version="1.0" encoding="UTF-8"?> 

									<settings> 

									<db> 

									 <name>test</name> 

									 <host>localhost</host> 

									</db> 

									</settings> 

									// Load settings (XML) 

									$settings = New Settings_XML; 

									$settings->load('config.xml'); 

									echo 'XML: ' . $settings->get('db.host') . ''; 

									* 

									*/

									 读取YAML格式文件,使用YAML必须使用到SPYC这个库<a href="http://spyc.sourceforge.net//">

									/</a>** 

									YAML配置例子:config.yaml 

									db: 

									 name: test 

									 host: localhost 

									// Load settings (YAML) 

									$settings = New Settings_YAML; 

									$settings->load('config.yaml'); 

									echo 'YAML: ' . $settings->get('db.host') . ''; 

									*/