Paste_Image.png

Paste_Image.png

修改代碼

public function cacheData($key,$value='',$cacheTime=0){
        $filename=$this->_dir.$key.self::EXT;

$cacheTime=sprintf('%011d',$cacheTime);

            return file_put_contents($filename,$cacheTime.json_encode($value));
        }
        if(!is_file($filename)){
            return FALSE;
        }

        $contents=file_get_contents($filename);
        $cacheTime=(int)substr($contents,0,11);
        $value=substr($contents,11);
        if($cacheTime+filemtime($filename)<time()){
            unlink($filename);
            return FALSE;
        }
        return json_decode($value,true);

require_once 'file.php';
$cache=new File();
$tests = array();
if(!$tests=$cache->cacheData('index_mk_cache'.$page.'-'.$pagesize)) {

    if($tests){
        $cache->cacheData('index_mk_cache'.$page.'-'.$pagesize,$tests,120);
    }
}

file.php

<?php

class File{
    private $_dir;

    const EXT='.txt';

    public function __construct()
    {
        $this->_dir=dirname(__FILE__).'/files/';
    }

    public function cacheData($key,$value='',$cacheTime=0){
        $filename=$this->_dir.$key.self::EXT;

        if($value!==''){//將value值寫入緩存

            if($cacheTime!=0&&is_null($value)){
                return @unlink($filename);
            }

            $dir=dirname($filename);
            if(!is_dir($dir)){
                mkdir($dir,0777);
            }

            $cacheTime=sprintf('%011d',$cacheTime);

            return file_put_contents($filename,$cacheTime.json_encode($value));
        }
        if(!is_file($filename)){
            return FALSE;
        }

        $contents=file_get_contents($filename);
        $cacheTime=(int)substr($contents,0,11);
        $value=substr($contents,11);
        if($cacheTime+filemtime($filename)<time()){
            unlink($filename);
            return FALSE;
        }
        return json_decode($value,true);

    }
}

$file=new File();
echo $file->cacheData('test1');

list.php

<?php
//http://app.com/list.php？page=1&pagesize=12
require_once 'response.php';
require_once 'Db.php';
require_once 'file.php';

$page=isset($_GET['page'])?$_GET['page']:1;
$pagesize=isset($_GET['pagesize'])?$_GET['pagesize']:15;
if(!is_numeric($page)||!is_numeric($pagesize)){
    return Response::show(401,"數(shù)據(jù)不合法");
}
$offset=($page-1)*$pagesize;
$sql="select * from test order by id desc limit ".$offset.",".$pagesize;
$cache=new File();
$tests = array();
if(!$tests=$cache->cacheData('index_mk_cache'.$page.'-'.$pagesize)) {
    try {
        $connect = Db::getInstance()->connect();
    } catch (Exception $e) {
        //$e->getMessage 建議只用于調(diào)試 不暴露信息給客戶端
        return Response::show(403, "數(shù)據(jù)庫(kù)連接失敗");
    }

    $result = mysql_query($sql, $connect);


    while ($item = mysql_fetch_assoc($result)) {
        $tests[] = $item;
    }

    if($tests){
        $cache->cacheData('index_mk_cache'.$page.'-'.$pagesize,$tests,120);
    }
}
if ($tests) {
    return Response::show(200, '首頁(yè)數(shù)據(jù)獲取成功', $tests);
} else {
    return Response::show(400, '首頁(yè)獲取數(shù)據(jù)失敗', $tests);
}
?>

Db.php

<?php

class Db{
    static private $_instance;
    static private $_connectSource;

    private $_dbConfig=array(
        'host'=>'127.0.0.1',
        'user'=>'root',
        'password'=>'',
        'database'=>'info'
    );

    private function __construct()
    {
    }

    static public function getInstance(){
        if(!(self::$_instance instanceof  self)){
            self::$_instance=new Db();
        }
        return self::$_instance;
    }

    public function connect(){
        if(!self::$_connectSource){
            self::$_connectSource=@mysql_connect($this->_dbConfig['host'],$this->_dbConfig['user'],$this->_dbConfig['password']);
            //echo self::$_connectSource;
            if(!(self::$_connectSource)){
                throw new Exception('mysql connect error');
                //die('mysql connect error'.mysql_error());
            }else{

                mysql_select_db($this->_dbConfig['database'],self::$_connectSource);
                mysql_query('set name UTF8');}
        }
        return self::$_connectSource;
    }
}

//    $connect=Db::getInstance()->connect();
//
//    $sql="select * from test";
//    echo mysql_num_rows(mysql_query($sql,$connect));

?>

response.php

<?php

class Response
{
    const JSON="json";

    public static function show($code,$message='',$data=array(),$type=self::JSON){
        if(!is_numeric($code)){
            return '';
        }

        $type=isset($_GET['format'])?$_GET['format']:self::JSON;

        $result=array(
            'code'=>$code,
            'message'=>$message,
            '$data'=>$data
        );

        if($type=='json'){
            self::json($code,$message,$data);
            ecit;
        }else if($type=='array'){
            var_dump($result);
        }else if ($type=='xml'){
            self::xmlEncode($code,$message,$data);
        }else{
            //TODO
        }
    }


    public static function json($code, $message = '', $data = array())
    {
        if(!is_numeric($code)){
            return "";
        }else{
            $result=array(
                'code'=>$code,
                'message'=>$message,
                'data'=>$data
            );
            $str=json_encode($result);
            echo  preg_replace("#\\\u([0-9a-f]{4})#ie", "iconv('UCS-2BE', 'UTF-8', pack('H4', '\\1'))", $str);
            exit;
        }
    }

    public static function xmlEncode($code,$message,$data=array()){
        if(!is_numeric($code)){
            return "";
        }

        $result=array(
            'code'=>$code,
            'message'=>$message,
            'data'=>$data,
        );

        header("Content-Type:text/xml");//指定頁(yè)面類型
        $xml="<?xml version='1.0' encoding='UTF-8'?>";
        $xml.="<root>";
        $xml.=self::xmlToEncode($result);
        $xml.="</root>";
        echo $xml;
    }

    public static function xmlToEncode($data)
    {
        $xml = $attr="";
        foreach ($data as $key => $value) {
            if (is_numeric($key)){
                $attr="id='{$key}'";
                $key="item ";
            }
            $xml .= "<{$key}{$attr}>";
            $xml .=is_array($value)?self::xmlToEncode($value):$value;
            $xml .= "</{$key}>";
        }
        return $xml;
    }

}

?>

Paste_Image.png

Paste_Image.png