本文主要给大家介绍关于ThinkPHP 3.2.3实现页面静态化功能的方法，我们首先会和大家介绍一下页面静态化的几种实现方式，文中通过示例代码介绍的非常详细，需要的朋友可以参考借鉴，下面来一起看看吧。
大家都知道PHP 的页面静态化有多种实现方式，比如使用输出缓冲（output buffering），该种方式是把数据缓存在 PHP 的缓冲区（内存）中，下一次取数据时直接从缓冲区中读取数据，从而避免了脚本的编译和访问数据库等过程；另一种方式是直接生成静态的 HTML 文件，使用文件读写函数来实现，一些内容不经常改动的页面可以使用静态页面，访客访问到的页面就是真实的 HTML 页面，一些常见的 CMS 会使用该种方法。
以第二种方法为例，参考 DedeCMS 5.7 的静态化功能，在 ThinkPHP 3.2.3 下实现该方法。由于 ThinkPHP 是单入口系统，而且每一个页面都要对应控制器中的某个方法，因此不能直接把静态文件的地址作为实际访问的地址，而是需要在控制器中以模版加载的方式读取静态文件。
首页静态化的实现
在 DedeCMS 5.7 中，可以生成静态的首页、栏目页和文章页。其中首页的生成在后台的“生成”栏目进行设置，包括模板的选择、首页静态文件的存放路径以及首页模式（使用动态首页还是静态首页），DedeCMS 还专门为首页的设置设计了一张表 dede_homepageset，包含的字段包括 templet（模板位置）、position（首页静态文件的路径）、showmod（首页模式），通过在后台进行设置与生成，来控制网站首页使用动态首页还是静态首页，用到的核心文件是 \dede\makehtml_homepage.php。
流程大致是：
① 在后台选择生成静态页面时，通过表单向 makehtml_homepage.php 发送请求，参数包括 dede_homepageset 的所有字段
② 根据传递参数中的 templet、position、showmod 更新 dede_homepageset 表
③ 如果 showmod 是使用静态，加载模板，把模板保存为静态文件。使用的方法是 fopen()，fwrite() 和 fclose()，非常简单
④ 生成了静态页面之后，访客访问的就直接是静态的 index.html，如果首页发生了改变，则手动在后台重新生成一下首页
在 ThinkPHP 中可以这样设计：
config.php
<?php return array( //'配置项'=>'配置值' 'INDEX_MOD'=>1,//首页模式 0-动态模式 1-静态模式 'INDEX_HTML_FILE'=>__ROOT__.'Application/Home/View/Index/index_html.html',//静态首页地址 );
/Application/Home/Controller/IndexController.php
<?php
namespace Home\Controller;
use Think\Controller;
class IndexController extends Controller {
//首页
public function index() {
if(1 == C('INDEX_MOD')) {
//静态
$this->display('index_html');
} else {
//动态
$list = M('category')->select();
$this->assign('list', $list);
$this->display('index_php');
}
}
//根据动态首页的内容生成静态页面
public function makehtml_homepage() {
$homepage = 'http://'.$_SERVER['HTTP_HOST'].U('Home/Index/index_php');
$content = @file_get_contents($homepage);
file_put_contents(C('INDEX_HTML_FILE'), $content);
}
//动态首页数据
public function index_php() {
C('INDEX_MOD', 0);
$this->index();
}
}模版文件 /Application/Home/View/Index/index_php.php
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<volist name="list" id="vo">
{$vo.cat_name}<br />
</volist>
</body>
</html>在执行 http://ServerName/Home/Index/makehtml_homepage ，即手动生成静态首页后，在 /Application/Home/View/Index/ 路径下生成了静态文件：index_html.html，根据配置文件中设置的 INDEX_MODE 为静态，访问 http://ServerName 实际访问的就是新生成的静态文件。
ThinkPHP 也自带了生成静态文件的方法 buildHtml，使用方法是 buildHtml('生成的静态文件名称', '生成的静态文件路径', '指定要调用的模板文件');
方法在 /ThinkPHP/Library/Think/Controller.class.php，Line 86：
/**
* 创建静态页面
* @access protected
* @htmlfile 生成的静态文件名称
* @htmlpath 生成的静态文件路径
* @param string $templateFile 指定要调用的模板文件
* 默认为空 由系统自动定位模板文件
* @return string
*/
protected function buildHtml($htmlfile='',$htmlpath='',$templateFile='') {
$content = $this->fetch($templateFile);
$htmlpath = !empty($htmlpath)?$htmlpath:HTML_PATH;
$htmlfile = $htmlpath.$htmlfile.C('HTML_FILE_SUFFIX');
Storage::put($htmlfile,$content,'html');
return $content;
}其中 Storage 类在 /ThinkPHP/Library/Think/Storage.class.php
<?php
// +----------------------------------------------------------------------
// | TOPThink [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2013 http://topthink.com All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think;
// 分布式文件存储类
class Storage {
/**
* 操作句柄
* @var string
* @access protected
*/
static protected $handler ;
/**
* 连接分布式文件系统
* @access public
* @param string $type 文件类型
* @param array $options 配置数组
* @return void
*/
static public function connect($type='File',$options=array()) {
$class = 'Think\\Storage\\Driver\\'.ucwords($type);
self::$handler = new $class($options);
}
static public function __callstatic($method,$args){
//调用缓存驱动的方法
if(method_exists(self::$handler, $method)){
return call_user_func_array(array(self::$handler,$method), $args);
}
}
}默认的文件类型是 File，所以实例化的类的地址在 /ThinkPHP/Library/Think/Storage/Driver/File.class.php
<?php
// +----------------------------------------------------------------------
// | TOPThink [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2013 http://topthink.com All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think\Storage\Driver;
use Think\Storage;
// 本地文件写入存储类
class File extends Storage{
private $contents=array();
/**
* 架构函数
* @access public
*/
public function __construct() {
}
/**
* 文件内容读取
* @access public
* @param string $filename 文件名
* @return string
*/
public function read($filename,$type=''){
return $this->get($filename,'content',$type);
}
/**
* 文件写入
* @access public
* @param string $filename 文件名
* @param string $content 文件内容
* @return boolean
*/
public function put($filename,$content,$type=''){
$dir = dirname($filename);
if(!is_dir($dir))
mkdir($dir,0755,true);
if(false === file_put_contents($filename,$content)){
E(L('_STORAGE_WRITE_ERROR_').':'.$filename);
}else{
$this->contents[$filename]=$content;
return true;
}
}
/**
* 文件追加写入
* @access public
* @param string $filename 文件名
* @param string $content 追加的文件内容
* @return boolean
*/
public function append($filename,$content,$type=''){
if(is_file($filename)){
$content = $this->read($filename,$type).$content;
}
return $this->put($filename,$content,$type);
}
/**
* 加载文件
* @access public
* @param string $filename 文件名
* @param array $vars 传入变量
* @return void
*/
public function load($_filename,$vars=null){
if(!is_null($vars))
extract($vars, EXTR_OVERWRITE);
include $_filename;
}
/**
* 文件是否存在
* @access public
* @param string $filename 文件名
* @return boolean
*/
public function has($filename,$type=''){
return is_file($filename);
}
/**
* 文件删除
* @access public
* @param string $filename 文件名
* @return boolean
*/
public function unlink($filename,$type=''){
unset($this->contents[$filename]);
return is_file($filename) ? unlink($filename) : false;
}
/**
* 读取文件信息
* @access public
* @param string $filename 文件名
* @param string $name 信息名 mtime或者content
* @return boolean
*/
public function get($filename,$name,$type=''){
if(!isset($this->contents[$filename])){
if(!is_file($filename)) return false;
$this->contents[$filename]=file_get_contents($filename);
}
$content=$this->contents[$filename];
$info = array(
'mtime' => filemtime($filename),
'content' => $content
);
return $info[$name];
}
}可以看到 get 和 put 方法所使用的方法是 file_get_contents() 和 file_put_contents() 。
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