一个干页面静态化的php类
一个做页面静态化的php类
<?php
namespace Common;
/* *
* 功能：页面静态化的创建和删除
* 创建：当且仅当，一个页面需要被静态化并且还未静态化时。
* 删除：当且仅当，一个页面存在静态化页面并且需要被重新静态化时。
*
* 作者：郭军周
*
* 注 ：本类基于ThinkPHP3.2，或者其他具有“单一入口且MVC模式”的其他php框架。
*
* 使用方式：在Controller的构造方法中获取其对象；在Controller的销毁方法里，用其对象的_static方法。
* 例：XXXController extends BaseController.
* BaseController:
* function __construct(){
* $this->__sh = StaticHtml::getInstance();
* }
* function __destruct(){
* $this->__sh->_static();
* }
*
* */
class StaticHtml{
private static $_instance = null; /* 单例模式，自身的引用 */
private $_needStatic = false; /* 是否需要将其静态化 */
private $_needDeleteStatic = false; /* 是否需要删除其静态化的页面 */
private $_hasStaticed = true; /* 是否存在其的静态化页面 */
private $_controller = null; /* 当前被访问的controller */
private $_action = null; /* 当前被访问的action */
// private $_staticAgain = false; /* 删除静态文件后，是否马上重新更新【【注意】再次请求】 */
private $_save_path = null; /* 将要创建或者删除的静态文件的路径 */
private $_conf = array( /* 此文件定义一些静态文件的存放方式 */
'files_per_directory' => 100 /* 此值不允许被修改，除非是要删除所有已经存在的静态文件，重新缓存 */
);
private $_staticList = array( /* 此数组，定义了需要创建静态化页面的Controller的action */
// 'Base' => array( /* Base为controller name */
// 'aaa' => array( /* aaa为action name */
// 'save_path' => '/StaticHtml/Base/aaa/', /* save_path为生成的静态文件存放的根路径 */
// 'static_base' => 'id', /* static_base为生成静态文件的“依据”。建议为对应数据库的primary_key */
// 'alias' => 'aaa' /* 静态文件的名字，否则为1.html */
// )
// )
'Mynotes' => array(
'look_notes' => array(
'save_path' => '/StaticHtml/Mynotes/look_notes/',
'static_base' => 'id',
'alias' => 'note'
),
'add_personal_notes' => array(
'save_path' => '/StaticHtml/Mynotes/',
'alias' => 'note-add'
)
),
'Resource' => array(
'allResource' => array(
'save_path' => '/StaticHtml/Resource/',
'alias' => 'allResource'
),
'resource_add' => array(
'save_path' => '/StaticHtml/Resource/',
'alias' => 'resourceAdd'
)
),
'Thing' => array(
'suggestion_of_lecture' => array(
'save_path' => '/StaticHtml/Lecture/',
'alias' => 'voteLecture'
)
),
'Passwordfix' => array(
'index' => array(
'save_path' => '/StaticHtml/Information/',
'alias' => 'updatePassword'
)
),
'Information' => array(
'index' => array(
'save_path' => '/StaticHtml/Information/',
'static_base' => 'user_id',
'alias' => 'information'
)
),
'Courseinfo' => array(
'course_show' => array(
'save_path' => '/StaticHtml/Information/',
'static_base' => 'user_id',
'alias' => 'course'
)
)
);
private $_deleteList = array( /* 此数组，定义了需要删除某些静态化页面的Controller的action */
// 'Base' => array( /* Base为controller name */
// 'bbb' => array( /* bbb为action name */
// 'save_path' => '/StaticHtml/Base/aaa/', /* save_path为要删除的静态文件存放的根路径 */
// 'static_base' => 'id', /* static_base为确定静态文件路径的“依据”。建议为对应数据库的primary_key */
// 'alias' => 'aaa' /* 静态文件的名字，否则为1.html */
// )
// )
'Mynotes' => array(
'edits_notes' => array(
'save_path' => '/StaticHtml/Mynotes/look_notes/',
'static_base' => 'id',
'alias' => 'note'
)
),
'Information' => array(
'save_user_info' => array(
'save_path' => '/StaticHtml/Information/',
'static_base' => 'user_id',
'alias' => 'information'
)
),
'Courseinfo' => array(
'course_update' => array(
'save_path' => '/StaticHtml/Information/',
'static_base' => 'user_id',
'alias' => 'course'
)
)
);
private function __construct(){
$this->needStatic(); /* 确定本次请求是否需要静态化 */
$this->hasStaticed(); /* 确定本次请求是否已经存在静态化页面 */
$this->needDeleteStatic(); /* 确定本次请求是否需要删除某些静态页面 */
}
/* 确定需要删除的静态文件的存放路径 */
private function needDeleteStatic(){
if($this->_needDeleteStatic){
$save_path = $this->getSavePath($this->_deleteList[$this->_controller][$this->_action]);
$this->_hasStaticed = false;
if(file_exists(ROOT_PATH.$save_path)){
$this->_hasStaticed = true;
}
// $this->_staticAgain = $this->_deleteList[$this->_controller][$this->_action]['visitAgain'];
$this->_save_path = ROOT_PATH.$save_path;
}
}
/* 获取本类的，唯一的，实例化 */
public static function getInstance(){
if(!(self::$_instance instanceof self)){
self::$_instance = new self();
}
return self::$_instance;
}
/* 判断是否存在其静态化的文件 */
private function hasStaticed(){
if($this->_needStatic){
$save_path = $this->getSavePath($this->_staticList[$this->_controller][$this->_action]);
if(!file_exists(ROOT_PATH.$save_path)){
$this->_hasStaticed = false;
ob_start();
}else{
header("location: http://".$_SERVER['HTTP_HOST'].dirname($_SERVER['SCRIPT_NAME']).$save_path);
}
$this->_save_path = ROOT_PATH.$save_path;
}
}
/* 获取本次请求要生成或者删除的，静态化文件的路径 */
private function getSavePath($conf){
if(!isset($conf['static_base'])){
$save_path = $conf['save_path'];
$save_path .= $conf['alias'].'.html';
}else{
if($conf['static_base'] == 'user_id'){
$id = (int)$_SESSION['logined_user']['id'];
}else{
if(IS_GET){
$id = $_GET[$conf['static_base']];
}else{
$id = $_POST[$conf['static_base']];
}
}
$save_path = $conf['save_path'];
$directory_id = ceil($id/$this->_conf['files_per_directory']);
$save_path .= $directory_id.'/';
if($conf['alias']){
$fileName = $conf['alias'].'-';
}
$fileName .= $id.'.html';
$save_path .= $fileName;
}
return $save_path;
}
/* 确定本次请求，是否需要生成静态化文件 */
private function needStatic(){
$url = explode('/',__ACTION__);
$this->_controller = $url[4];
$this->_action = $url[5];
if(isset($this->_staticList[$this->_controller]) && isset($this->_staticList[$this->_controller][$this->_action])){
$this->_needStatic = true;
}
if(isset($this->_deleteList[$this->_controller]) && isset($this->_deleteList[$this->_controller][$this->_action])){
$this->_needDeleteStatic = true;
}
}
/* 生成，或者删除，静态化文件 */
public function _static(){
if($this->_needStatic && !$this->_hasStaticed){
$html = ob_get_contents();
$this->_mkdir(dirname($this->_save_path));
file_put_contents($this->_save_path,$html);
}
if($this->_needDeleteStatic && $this->_hasStaticed){
unlink($this->_save_path);
/*if($this->_staticAgain){
header("location: http://www.baidu.com");
// header("location: http://".$_SERVER['HTTP_HOST'].'/'.$_SERVER['REQUEST_URI']);
}*/
}
}
/* 创建目录 */
private function _mkdir($path){
if (!file_exists($path)){
$this->_mkdir(dirname($path));
mkdir($path, 0777);
}
}
}
?>