//db.php
/**
* 单例链接数据库
* */
classDb {
static private$_instance;
static private$_connectSource;
private$_dbConfig=array(
'host'=>'127.0.0.1',
'user'=>'root',
'password'=>'',
'database'=>'video',
);
private function__construct() {
}
static public functiongetInstance() {
if(!(self::$_instanceinstanceof self)) {
self::$_instance=new self();
}
return self::$_instance;
}
public functionconnect() {
if(!self::$_connectSource) {
self::$_connectSource= @mysql_connect($this->_dbConfig['host'],$this->_dbConfig['user'],$this->_dbConfig['password']);
if(!self::$_connectSource) {
throw newException('mysql connect error '. mysql_error());
//die('mysql connect error' . mysql_error());
}
mysql_select_db($this->_dbConfig['database'],self::$_connectSource);
mysql_query("set names UTF8",self::$_connectSource);
}
return self::$_connectSource;
}
}
//response.php
classResponse {
constJSON="json";
/**
* 按综合方式输出通信数据
*@paraminteger $code 状态码
*@paramstring $message 提示信息
*@paramarray $data 数据
*@paramstring $type 数据类型
* return string
*/
public static functionshow($code,$message='',$data=array(),$type=self::JSON) {
if(!is_numeric($code)) {
return'';
}
if(in_array($_GET['format'],array('json','xml','jsonp'))){
$type='json';
}
// $type = isset($_GET['format']) ? $_GET['format'] : self::JSON;
$result=array(
'code'=>$code,
'message'=>$message,
'data'=>$data,
);
if($type=='json') {
self::json($code,$message,$data);
exit;
}elseif($type=='array') {
var_dump($result);
}elseif($type=='xml') {
self::xmlEncode($code,$message,$data);
exit;
}else{
//TODO
}
}
/**
* 按json方式输出通信数据
*@paraminteger $code 状态码
*@paramstring $message 提示信息
*@paramarray $data 数据
* return string
*/
public static functionjson($code,$message='',$data=array()) {
if(!is_numeric($code)) {
return'';
}
$result=array(
'code'=>$code,
'message'=>$message,
'data'=>$data
);
echojson_encode($result);
exit;
}
/**
* 按xml方式输出通信数据
*@paraminteger $code 状态码
*@paramstring $message 提示信息
*@paramarray $data 数据
* return string
*/
public static functionxmlEncode($code,$message,$data=array()) {
if(!is_numeric($code)) {
return'';
}
$result=array(
'code'=>$code,
'message'=>$message,
'data'=>$data,
);
header("Content-Type:text/xml");
$xml="\n";
$xml.="\n";
$xml.=self::xmlToEncode($result);
$xml.="";
echo$xml;
}
/**
* 转换成xml数据返回
* */
public static functionxmlToEncode($data) {
$xml=$attr="";
foreach($dataas$key=>$value) {
if(is_numeric($key)) {
$attr=" id='{$key}'";
$key="item";
}
$xml.="<{$key}{$attr}>";
$xml.= is_array($value) ?self::xmlToEncode($value) :$value;
$xml.="\n";
}
return$xml;
}
}
//list.php
// http://app.com/list.php?page-=1&pagesize=12
require_once('./response.php');
require_once('./file.php');
$file=newFile();
$data=$file->cacheData('index_cron_cahce');
if($data) {
returnResponse::show(200,'首页数据获取成功',$data);
}else{
returnResponse::show(400,'首页数据获取失败',$data);
}
exit;
require_once('./db.php');
require_once('./file.php');
$page=isset($_GET['page']) ?$_GET['page'] :1;
$pageSize=isset($_GET['pagesize']) ?$_GET['pagesize'] :6;
if(!is_numeric($page) || !is_numeric($pageSize)) {
returnResponse::show(401,'数据不合法');
}
$offset= ($page-1) *$pageSize;
$sql="select*from video where status = 1 order by orderby desc limit ".$offset." , ".$pageSize;
$cache=newFile();
$videos=array();
if(!$videos=$cache->cacheData('index_mk_cache'.$page.'-'.$pageSize)) {
echo1;exit;
try{
$connect= Db::getInstance()->connect();
}catch(Exception$e) {
// $e->getMessage();
returnResponse::show(403,'数据库链接失败');
}
$result= mysql_query($sql,$connect);
while($video= mysql_fetch_assoc($result)) {
$videos[] =$video;
}
if($videos) {
$cache->cacheData('index_mk_cache'.$page.'-'.$pageSize,$videos,1200);
}
}
if($videos) {
returnResponse::show(200,'首页数据获取成功',$videos);
}else{
returnResponse::show(400,'首页数据获取失败',$videos);
}
//缓存文件
/**
* 生成缓存文件、删除、读取缓存的操作封装
*
* */
classFile {
private$_dir;
constEXT='.txt';
/**
* 初始化文件存储位置
* */
public function__construct() {
$this->_dir= dirname(__FILE__) .'/files/';
}
/**
* param $key 缓存文件名称
* param $value 缓存文件的值
* */
public functioncacheData($key,$value='') {
$filename=$this->_dir.$key.self::EXT;
if($value!=='') {// 将value值写入缓存
if(is_null($value)) {
return@unlink($filename);
}
$dir= dirname($filename);
if(!is_dir($dir)) {
mkdir($dir,0777);
}
returnfile_put_contents($filename,json_encode($value));
}
if(!is_file($filename)) {
return FALSE;
}
/*
* 定时删除缓存文件
* */
// $contents = file_get_contents($filename);
// $cacheTime = (int)substr($contents, 0 ,11);
// $value = substr($contents, 11);
// if($cacheTime !=0 && ($cacheTime + filemtime($filename) < time())) {
// unlink($filename);
// return FALSE;
// }
returnjson_decode(file_get_contents($filename),true);
}
}
/**
* 生成缓存文件、删除、读取缓存的操作封装
*
* */
classFile {
private$_dir;
constEXT='.txt';
/**
* 初始化文件存储位置
* */
public function__construct() {
$this->_dir= dirname(__FILE__) .'/files/';
}
/**
* param $key 缓存文件名称
* param $value 缓存文件的值
* */
public functioncacheData($key,$value='') {
$filename=$this->_dir.$key.self::EXT;
if($value!=='') {// 将value值写入缓存
if(is_null($value)) {
return@unlink($filename);
}
$dir= dirname($filename);
if(!is_dir($dir)) {
mkdir($dir,0777);
}
returnfile_put_contents($filename,json_encode($value));
}
if(!is_file($filename)) {
return FALSE;
}
/*
* 定时删除缓存文件
* */
// $contents = file_get_contents($filename);
// $cacheTime = (int)substr($contents, 0 ,11);
// $value = substr($contents, 11);
// if($cacheTime !=0 && ($cacheTime + filemtime($filename) < time())) {
// unlink($filename);
// return FALSE;
// }
returnjson_decode(file_get_contents($filename),true);
}
}
