zhphp framework (三) 框架工作流程

<?php
/**
 * Created by PhpStorm.
 * User:  张华
 * Date: 2015/8/27
 * Time: 1:12
 * * QQ: [email protected]
 * To change this template use File | Settings | File Templates.
 */
######################web run start#################################################
define('IN_ZHPHP', true);
define('FRAMEWORKNAME', 'ZHPHP');
define('VERSION', 'v2.1.3');
define('RELEASE', '20151108');
$startTime=microtime(true);#开始计时
version_compare(PHP_VERSION, '5.2', '>=')?true:die('<lable style="color:#ff0000;">严重警告:php的版本低于php5.2!</lable>');#获取php版本并对php版本判断 Zhphp 框架最低ph版本为 php5.2
######################################## gzip compres start ############################################################
$HTTP_ACCEPT_ENCODING=$GLOBALS['_SERVER']['HTTP_ACCEPT_ENCODING'];
function CheckCanGzip(){#检测是否支持压缩
    global $HTTP_ACCEPT_ENCODING;
    if(!ini_get('zlib.output_compression')){#判断你是否配置php服务器压缩
        if(extension_loaded("zlib")){
            if (strpos($HTTP_ACCEPT_ENCODING, 'x-gzip') !== false){
                return "x-gzip";
            }else if (strpos($HTTP_ACCEPT_ENCODING,'gzip') !== false){
                return "gzip";
            }
        }
    }
    return 0;
}
/**
 * 页面压缩后输出
 * @param $content
 * @return string
 */
function ob_gzlib($content){
    $ENCODING = CheckCanGzip();
    if($ENCODING){
        $content = gzencode($content,6);
        header("Content-Encoding: ".$ENCODING);
        header("Vary: Accept-Encoding");
        header("Content-Length: ".strlen($content));
        return $content;
    }
    return false;
}
###################################  stystem set define start ##########################################################
defined('APP_DEBUG')?APP_DEBUG:define('APP_DEBUG',false);#是否设为调试
defined('DS')?DS:define( 'DS' , DIRECTORY_SEPARATOR );#分割符号
defined('DOC_ROOT')?DOC_ROOT:define('DOC_ROOT',$GLOBALS['_SERVER']['DOCUMENT_ROOT']);#得到服务器根目录地址
defined('APP_NAME')?APP_NAME:define('APP_NAME','application');#默认工程名
$http_type = ((isset($GLOBALS['_SERVER']['']) && $GLOBALS['_SERVER']['HTTPS'] == 'on') || (isset($GLOBALS['_SERVER']['HTTP_X_FORWARDED_PROTO']) && $GLOBALS['_SERVER']['HTTP_X_FORWARDED_PROTO'] == 'https')) ? 'https://' : 'http://';
$httpHost=isset($GLOBALS['_SERVER']['HTTP_HOST'])?$GLOBALS['_SERVER']['HTTP_HOST']:$_SERVER['HTTP_HOST'];
defined('CLASS_HTTP')?CLASS_HTTP:define('CLASS_HTTP',$http_type.$_SERVER['HTTP_HOST'] . substr($_SERVER['PHP_SELF'], 0, strrpos($_SERVER['PHP_SELF'], '/')));
$requestUri=isset($GLOBALS['_SERVER']['REQUEST_URI'])?$GLOBALS['_SERVER']['REQUEST_URI']:$_SERVER['REQUEST_URI'];
defined('HTTP')?HTTP:define('HTTP',$httpHost);
defined('APP_URI')?APP_URI:define('APP_URI',$http_type.$httpHost.$requestUri);#当前文件的脚本文件地址
defined('SERVER_HOST')?SERVER_HOST:define('SERVER_HOST',$http_type.$httpHost.'/');#域名地址
defined('SERVER_NAME')?SERVER_NAME:define('SERVER_NAME',$http_type.$httpHost);#不带 / 的域名
defined('APP_PATH')?APP_PATH:define('APP_PATH',str_replace('\\','/',dirname(dirname(dirname(__FILE__))).'/'.APP_NAME.'/'));
defined('PROJECT_PATH')?PROJECT_PATH:define('PROJECT_PATH',dirname(APP_PATH));#得到工程路径
if(PROJECT_PATH != DOC_ROOT){
$arr=explode('/',PROJECT_PATH);#分解工程
defined('PROJECT_NAME')?PROJECT_NAME:define('PROJECT_NAME',end($arr));#得到工程名并设置全局常量
}else{
 defined('PROJECT_NAME')?PROJECT_NAME:define('PROJECT_NAME',APP_NAME);#得到工程名并设置全局常量
}
defined('WEB_STATIC')?WEB_STATIC:define('WEB_STATIC',PROJECT_PATH.'/'.APP_NAME.'/web/');#静态渲染层地址	
defined('ROOT_PATH')?ROOT_PATH:define('ROOT_PATH',str_ireplace('\\','/',dirname(dirname(__FILE__))).'/');#得到当前的系统跟目录地址
defined('APP_HOST')?APP_HOST:define('APP_HOST',$httpHost.'/');
unset($http_type,$is_version,$httpHost,$requestUri,$project_work,$project_name,$arr,$environment);#手动销毁相应的变量
include_once ROOT_PATH.'common/define.php';#加载你的应用程序常量
######################################## php.ini config ###############################################
#程序对服务器的安全配置
ini_set('safe_mode','On');#打开php安全模式
ini_set('expose_php','Off');#对外隐藏php版本信息
ini_set('log_errors','On');#打开错误日志功能
ini_set('error_log',APP_PATH.'data/error_log/general_errors.log');#记录错误日志文件
ini_set('register_globals','Off');#关闭全局变量注册
ini_set('memory_limit','512M');#设置运行内存
ini_set('session.cache_expire',  180);
ini_set('session.use_trans_sid', 0);
ini_set('session.use_cookies',   1);
ini_set('session.auto_start',    0);
ini_set('session.gc_maxlifetime', 'time_in_seconds');
ini_set('session.name','zhphpsession');
ini_set('session.gc_probability',0);
ini_set('session.cookie_path',SESSION_PATH);
ini_set('session.cookie_domain',SESSION_DOMAIN);
ini_set('session.cookie_lifetime', '1800');
ini_set('session.save_path',SESSION_PATH);
include_once ROOT_PATH.'engine/loader.class.php'; #加载loader类
loader::init();
engine::loadCommon('common');#加载系统工具函数文件
config::loadConfig();#加载配置
set_error_handler('error');#自定义错误函数
################################## 开发环境  调试 ################################################################
$environment=config::readConfig('develop','environment');
switch($environment){
    case 1: defined('HTTP_URL')?HTTP_URL:define('HTTP_URL',SERVER_HOST.PROJECT_NAME.'/'); break;#设置全局常量
    case 2: defined('HTTP_URL')?HTTP_URL:define('HTTP_URL',SERVER_HOST); break;
    case 3: echo '等待测试'; break;
}
#设置错误显示级别
if(APP_DEBUG){
    ini_set('display_errors', true);
    error_reporting(E_ALL);
    browserDebug();#加载浏览器调试工具,方便在开发的时候，在浏览器调试，目前支持Firefox，Chrome
}else{
    ini_set('display_errors', false);
    error_reporting(0);
}
$GLOBALS['router']=engine::load('router');#路由引擎并实例化结果
############################## 预防sql注入与程序安全预防 start ################################
checkSafeInput();
if (!get_magic_quotes_gpc()) {
      $_GET       = addslashes_deep($_GET);
      $_POST      = addslashes_deep($_POST);
      $_COOKIE    = addslashes_deep($_COOKIE);
      $_REQUEST   = addslashes_deep($_REQUEST);
}