[PHP知识库]原生php生成静态页面

目录结构

?

MyPdo.php类

<?php


class MyPdo
{
    private static $_instance = null;
    protected $dbName = '';
    protected $dsn;
    protected $dbh;

    public function __construct($dbHost, $dbUser, $dbPasswd, $dbName, $dbCharset = 'utf8')
    {
        try {
            $this->dsn = 'mysql:host=' . $dbHost . ';dbname=' . $dbName;
            $this->dbh = new \PDO($this->dsn, $dbUser, $dbPasswd);
            $this->dbh->setAttribute(\PDO::ATTR_EMULATE_PREPARES, false);
            $this->dbh->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);
            $this->dbh->exec('SET character_set_connection=' . $dbCharset . ';SET character_set_client=' . $dbCharset . ';SET character_set_results=' . $dbCharset);
        } catch (Exception $e) {
            $this->outputError($e->getMessage());
        }
    }

    public static function getInstance($dbHost, $dbUser, $dbPasswd, $dbName, $dbCharset = 'utf8mb4')
    {
        if (self::$_instance === null) {
            self::$_instance = new self($dbHost, $dbUser, $dbPasswd, $dbName, $dbCharset);
        }
        return self::$_instance;
    }

    public function fetchAll($sql, $params = array())
    {
        try {
            $stm = $this->dbh->prepare($sql);
            if ($stm && $stm->execute($params)) {
                return $stm->fetchAll(\PDO::FETCH_ASSOC);
            }
        } catch (Exception $e) {
            $this->outputError($e->getMessage());
        }
    }

    public function fetchOne($sql, $params = array())
    {
        try {
            $result = false;
            $stm = $this->dbh->prepare($sql);
            if ($stm && $stm->execute($params)) {
                $result = $stm->fetch(\PDO::FETCH_ASSOC);
            }
            return $result;
        } catch (Exception $e) {
            $this->outputError($e->getMessage());
        }
    }

    public function fetchColumn($sql, $params = array())
    {
        $result = '';
        try {
            $stm = $this->dbh->prepare($sql);
            if ($stm && $stm->execute($params)) {
                $result = $stm->fetchColumn();
            }
            return $result;
        } catch (Exception $e) {
            $this->outputError($e->getMessage());
        }
    }

    public function insert($table, $params = array(), $returnLastId = true)
    {
        $_implode_field = '';
        $fields = array_keys($params);
        $_implode_field = implode(',', $fields);
        $_implode_value = '';
        foreach ($fields as $value) {
            $_implode_value .= ':' . $value . ',';
        }
        $_implode_value = trim($_implode_value, ',');
        $sql = 'INSERT INTO ' . $table . '(' . $_implode_field . ') VALUES (' . $_implode_value . ')';
        try {
            $stm = $this->dbh->prepare($sql);
            $result = $stm->execute($params);
            if ($returnLastId) {
                $result = $this->dbh->lastInsertId();
            }
            return $result;
        } catch (Exception $e) {
            $this->outputError($e->getMessage());
        }
    }

    public function update($sql)
    {

        try {
            $stm = $this->dbh->exec($sql);
            return $stm;
        } catch (Exception $e) {
            $this->outputError($e->getMessage());
        }
    }

    public function delete($sql, $params = array())
    {
        try {
            $stm = $this->dbh->prepare($sql);
            $result = $stm->execute($params);
            return $result;
        } catch (Exception $e) {
            $this->outputError($e->getMessage());
        }
    }

    public function exec($sql, $params = array())
    {
        try {
            $stm = $this->dbh->prepare($sql);
            $result = $stm->execute($params);
            return $result;
        } catch (Exception $e) {
            $this->outputError($e->getMessage());
        }
    }

    private function outputError($strErrMsg)
    {
        throw new Exception("MySQL Error: " . $strErrMsg);
    }

    public function __destruct()
    {
        $this->dbh = null;
    }
}

展示页面? index.php

<?php
include_once './cla/MyPdo.php';
$pdo = MyPdo::getInstance('localhost', 'root', 'root', 'test');
$sql = "select * from news";
$res = $pdo->fetchAll($sql);
include './view/index.html';

展示页面index.html

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Layui</title>
  <meta name="renderer" content="webkit">
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
  <link rel="stylesheet" href="//res.layui.com/layui/dist/css/layui.css"  media="all">
  <!-- 注意：如果你直接复制所有代码到本地，上述css路径需要改成你本地的 -->
</head>
<body>

<div class="layui-form">
  <table class="layui-table">
    <colgroup>
      <col width="150">
      <col width="150">
      <col width="200">
      <col>
    </colgroup>
    <thead>
      <tr>
        <th>ID</th>
        <th>标题</th>
        <th>操作</th>
      </tr>
    </thead>
    <tbody>

    <?php
    foreach($res as $v){
    echo "<tr>";
    echo "<td>$v[id]</td>";
    echo "<td>$v[name]</td>";
    echo "<td><a href='descs.php?id=$v[id]'>详情</a></td>";
    echo "</tr>";
    }
    ?>



    </tbody>
  </table>
</div>




<script src="//res.layui.com/layui/dist/layui.js" charset="utf-8"></script>
<script>

</script>

</body>
</html>

descs.php

<?php

$id = $_GET['id'];
include './cla/MyPdo.php';
$pdo = MyPdo::getInstance('localhost', 'root', 'root', 'test');
$sql = "select * from news where id = $id";
$res = $pdo->fetchOne($sql);
$html_static = './html/descs' . $id . '.html';
if (file_exists($html_static)) {
    include $html_static;
}else{
    if ($res['static'] == 1) {
        //开启缓存
        ob_start();
        include './view/descs.html';
        //存入文件后取出文件
        $file = ob_get_contents();
        //生成静态文件
        file_put_contents($html_static, $file);
        ob_flush();
    } else {
        include './view/descs.html';
    }
}

descs.html文件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js">
    </script>
</head>
<body>
<input type="hidden" value="<?php echo $res['id']; ?>" class="ids">
<div>标题:<?php echo $res['name'];  ?></div>
<div>内容:<?php echo $res['desc'];  ?></div>

访问量:<span class="num"></span>

</body>
</html>
<script>
    $.ajax({
        url:"looknum.php",
        data:{
            id:$(".ids").val()
        },
        dataType:"json",
        success:res=>{
            console.log(res)
            $(".num").html(res.num)
        }
    })

</script>

浏览量增加页面 looknum.php

<?php
$id = $_GET['id'];
include_once './cla/MyPdo.php';
$pdo = MyPdo::getInstance('localhost', 'root', 'root', 'test');
$sql = "select num from news where id = $id";
$res = $pdo->fetchOne($sql);
$sql1 = "update news set num= num+1 where id = $id";
 $res1=  $pdo->update($sql1);

echo json_encode($res);