PHP generates static page program and principle analysis

PHP generates static page program and principle analysis_PHP tutorial

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Release： 2016-07-13 10:44:51

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Generating static pages is a good choice in PHP to reduce server load and optimize SEO websites. Therefore, the function of generating static pages in PHP is a knowledge point that almost all PHP programmers must understand and master. Let me introduce PHP to you. Let’s analyze the principle of generating static pages. Friends who need to know more can enter for reference.

Analysis of the principle of generating html

We write the tags to be generated into a template file, and then use PHP to read and replace the specified tags with the content we want to replace. The current mainstream dedecms system also does this

Generate static page code.

The template i.e. the content html file has not yet been populated. For example:

The code is as follows

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代码如下

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temp.html

　　{ title }

　　this is a { file } fileArray;s templets

　　
templetest.php

　　$title = "拓迈国际测试模板";

　　$file　　= "TwoMax Inter test templet,
author：Matrix@Two_Max";

　　$fp　　= fopen ("temp.html","r");

　　$content　　= fread ($fp,filesize ("temp.html"));

　　$content .= str_replace ("{ file }",$file,$content);

　　$content .= str_replace ("{ title }",$title,$content);

　　echo $content;

temp.html

　{ title }

代码如下	复制代码
CREATE TABLE IF NOT EXISTS `news` ( `id` int(10) NOT NULL AUTO_INCREMENT, `title` varchar(128) DEFAULT NULL, `content` text, `time` int(10) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=12 ;

　this is a { file } file Array;s templets

代码如下	复制代码
$dsn = "mysql:host=localhost;dbname=test;"; $user = "root"; $password = ""; try{ $dbh = new PDO($dsn,$user,$password); }catch(PDOException $e){ echo "连接失败".$e->getMessage(); } ?>

　　 templetest.php <🎜>　$title = "Tomax International Test Template";<🎜> <🎜>　$file　= "TwoMax Inter test templet,
author: Matrix@Two_Max"; $fp = fopen ("temp.html","r"); 　$content　= fread ($fp,filesize ("temp.html")); 　$content .= str_replace ("{ file }",$file,$content); 　$content .= str_replace ("{ title }",$title,$content); echo $content; ?>

Such a super simple PHP function to generate static pages has been implemented, but it is not practical to implement this in the application. Below I will introduce an example from database to generation. 1. Create the test database test and create the user table as follows (insert several test database entries yourself):

The code is as follows	Copy code
CREATE TABLE IF NOT EXISTS `news` ( `id` int(10) NOT NULL AUTO_INCREMENT, `title` varchar(128) DEFAULT NULL, `content` text, `time` int(10) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=12 ;

2. Create connection data file conn.php

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$dsn = "mysql:host=localhost;dbname=test;";<🎜> $user = "root";<🎜> $password = "";<🎜> try{<🎜> $dbh = new PDO($dsn,$user,$password);<🎜> }catch(PDOException $e){<🎜> echo "Connection failed".$e->getMessage(); } ?>

3. Display the news list (news.php). Note that the connection is a static html connection. It has not been generated yet. Of course, the link cannot be opened:

代码如下	复制代码
添加文章 require_once "conn.php"; $sql = "select * from news"; foreach($dbh->query($sql) as $row){ echo "{$row['title']}----修改文章 "; } ?>

4. Add and modify article page:

代码如下	复制代码
//获取修改的内容 if($_GET['id']){ require_once "conn.php"; $sql = "select * from news where id={$_GET['id']}"; $res = $dbh->query($sql)->fetch(); } ?> 标题：内容：<?=@$res['content']?>

5. Page template template.html used to generate static files

The code is as follows

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代码如下

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{title}

{title}发表于{time}

{content}

{title}

{title}Published {time}

{content}

6.action.php is of course used to generate and update static files:

//Form processing operations

The code is as follows

代码如下

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//表单处理操作
header("content-type:text/html;charset=utf-8");
require_once 'conn.php';
$title = $_POST['title'];
$content = $_POST['content'];
$time = time();
if($_POST['submit']=='添加'){
$sql = "insert into news values('','$title','$content',$time)";
$dbh->query($sql);
  $id = $dbh->lastInsertId();
  $filename = "news_{$id}.html";
  $fp_tmp = fopen("template.html","r");
  $fp_html = fopen($filename,"w");
  while(!feof($fp_tmp)){
   $row = fgets($fp_tmp);
   $row = replace($row,$title,$content,date('Y-m-d H:i:s',$time));
   fwrite($fp_html,$row);
  }
  fclose($fp_tmp);
  fclose($fp_html);
  echo "添加成功并生成静态文件";
}else{
  $sql = "update news set title = $title , content = $content ,time = $time where id ={$_POST['id']}";
  $dbh->query($sql);
  $filename = "news_{$_POST['id']}.html";
  @unlink($filename);
  $fp_tmp = fopen("template.html","r");
  $fp_html = fopen($filename,"w");
  while(!feof($fp_tmp)){
   $row = fgets($fp_tmp);
   $row = replace($row,$title,$content,date('Y-m-d H:i:s',$time));
   fwrite($fp_html,$row);
  }
  fclose($fp_tmp);
  fclose($fp_html);
  echo "更新成功并更新静态文件";
}
//逐行替换函数
  function replace($row,$title,$content,$time){
   $row=str_replace("{title}",$title,$row);
   $row=str_replace("{content}",$content,$row);
   $row=str_replace("{time}",$time,$row);
   return $row;
}
?>

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header("content-type:text/html;charset=utf-8");

require_once 'conn.php';

$title = $_POST['title'];