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ThinkPHP 3.2.3 Method to implement page static function

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May 10, 2018 am 10:16 AM

php thinkphp

这篇文章主要介绍了关于ThinkPHP 3.2.3实现页面静态化功能的方法，有着一定的参考价值，现在分享给大家，有需要的朋友可以参考一下

页面静态化是我们在开发网站的时候经常需要的一个功能，下面这篇文章主要给大家介绍了关于ThinkPHP 3.2.3实现页面静态化功能的方法，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。

前言

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(
 //&#39;配置项&#39;=>&#39;配置值&#39;
 &#39;INDEX_MOD&#39;=>1,//首页模式 0-动态模式 1-静态模式
 &#39;INDEX_HTML_FILE&#39;=>__ROOT__.&#39;Application/Home/View/Index/index_html.html&#39;,//静态首页地址
);

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/Application/Home/Controller/IndexController.php

<?php
namespace Home\Controller;
use Think\Controller;
class IndexController extends Controller {
  
 //首页
 public function index() {
  if(1 == C(&#39;INDEX_MOD&#39;)) {
   //静态
   $this->display(&#39;index_html&#39;);
  } else {
   //动态
   $list = M(&#39;category&#39;)->select();
   $this->assign(&#39;list&#39;, $list);
   $this->display(&#39;index_php&#39;);
  }
 }
  
 //根据动态首页的内容生成静态页面
 public function makehtml_homepage() {
  $homepage = &#39;http://&#39;.$_SERVER[&#39;HTTP_HOST&#39;].U(&#39;Home/Index/index_php&#39;); 
  $content = @file_get_contents($homepage);
  file_put_contents(C(&#39;INDEX_HTML_FILE&#39;), $content);
 }
  
 //动态首页数据
 public function index_php() {
  C(&#39;INDEX_MOD&#39;, 0);
  $this->index();
 }
}

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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>

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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=&#39;&#39;,$htmlpath=&#39;&#39;,$templateFile=&#39;&#39;) {
  $content = $this->fetch($templateFile);
  $htmlpath = !empty($htmlpath)?$htmlpath:HTML_PATH;
  $htmlfile = $htmlpath.$htmlfile.C(&#39;HTML_FILE_SUFFIX&#39;);
  Storage::put($htmlfile,$content,&#39;html&#39;);
  return $content;
 }

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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=&#39;File&#39;,$options=array()) {
  $class = &#39;Think\\Storage\\Driver\\&#39;.ucwords($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);
  }
 }
}

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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

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<?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=&#39;&#39;){
  return $this->get($filename,&#39;content&#39;,$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=&#39;&#39;){
  $dir   = dirname($filename);
  if(!is_dir($dir))
   mkdir($dir,0755,true);
  if(false === file_put_contents($filename,$content)){
   E(L(&#39;_STORAGE_WRITE_ERROR_&#39;).&#39;:&#39;.$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=&#39;&#39;){
  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,$type=&#39;&#39;){
  return is_file($filename);
 }
 
 /**
  * 文件删除
  * @access public
  * @param string $filename 文件名
  * @return boolean  
  */
 public function unlink($filename,$type=&#39;&#39;){
  unset($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=&#39;&#39;){
  if(!isset($this->contents[$filename])){
   if(!is_file($filename)) return false;
   $this->contents[$filename]=file_get_contents($filename);
  }
  $content=$this->contents[$filename];
  $info = array(
   &#39;mtime&#39;  => filemtime($filename),
   &#39;content&#39; => $content
  );
  return $info[$name];
 }
}

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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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