创建一个接口公共类

<?php#    echo "response";$array = array('id' => 1,'name' => '王磊磊');// echo json_encode($array);// Response::json(200, "sucess", $array);/***  @param integer $code 状态码*  @param string $message 提示信息*  @param string $data 数据*  return string;*/class Response{public static function json ($code, $message = '', $data = array()) {if (!is_numeric($code)) {return '';}$result = array('code' => $code,'message' => $message,'data' =>$data);echo  json_encode($result);exit();}}
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创建数据库类

<?php/**
*
*/
header("Content-Type: text/html;charset=utf-8");
class Db
{static private $_instance;static private $_connectSource;private $_dbConfig  = array('host' => '127.0.0.1:3306','user' => 'root','password' => '2535262wll','database' => 'BYSJ');    private function __construct() {# code...}static public function getInstance() {if (!self::$_instance instanceof self) {self::$_instance = new self;}return self::$_instance;}public function connect() {// mysql_connect();//连接数据库// mysql_connect($this->_dbConfig['', )if (!self::$_connectSource) {# code...self::$_connectSource = mysql_connect($this->_dbConfig['host'], $this->_dbConfig['user'], $this->_dbConfig['password']);if (!self::$_connectSource) {// echo "  测试失败\r\n";die('mysql_error'.mysql_error());}// mysql_select_db($this->db['database'], self::$_connectSource);mysql_query("set name UTF8", self::$_connectSource);}return self::$_connectSource;}}
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app首页Demo

<?php//http://wangleilei.top/api/list.php?page=1&pagesize=12require_once('./Response.php');require_once('./db.php');$page = isset($_GET['page'])?$_GET['page']:1;$pagesize = isset($_GET['pagesize'])?$_GET['pagesize']:10;// echo $page."And ".$pagesize;if (!is_numeric($page) || !is_numeric($pagesize)) {# code...return Response::json(401,'数据不合法','12');}$offset = ($page - 1) * $pagesize;$sql = "select * from BYSJ.property  limit ".$offset.','.$pagesize;$collect = Db::getInstance()->connect();// var_dump($collect);$result = mysql_query($sql, $collect);echo mysql_num_rows($result);var_dump($result);复制代码