原生sql实现restful接口调用

index.php

<?php

include './Request.php';
include './Response.php';
//获取数据
$data=Request::getRequest();
$result=Response::sendResponse($data);
echo  $result;
?>
Request.php 

<?php
class Request{
    private static $method_type=array('get','post','put','delete','patch');
    private static $FruitList=array(
        1=>array('name'=>'apple','num'=>10),
        2=>array('name'=>'grape','num'=>20),
        3=>array('name'=>'orange','num'=>40),
        4=>array('name'=>'banana','num'=>30),
        5=>array('name'=>'peach','num'=>50),
        6=>array('name'=>'mango','num'=>60)
    );
    public static function getRequest(){
        $method=strtolower($_SERVER['REQUEST_METHOD']);
        if(in_array($method,self::$method_type)){
             $methodName=$method.'Data';
             return self::$methodName($_REQUEST);
        }
        return false;
    }
    //get 查询
    private static function getData($params){
        $fruitId=(int)$params['fruit'];
        if($fruitId>0){
            return self::$FruitList[$fruitId];
        }else{
            return self::$FruitList;
        }
    }
    //post 添加
    private static function postData($params){
        if(!empty($params['name'])){
            $data['name']=$params['name'];
            $data['num']=(int)$params['num'];
            self::$FruitList[]=$data;
            return self::$FruitList;
        }else{
            return false;
        }
    }
//put 更新水果信息(全部信息)
    private static function putData($params){
        $fruitId=(int)$params['fruit'];
        if($fruitId==0){
            return false;
        }
        $data=array();
        if(!empty($params['name'] && isset($params['num']))){
            $data['name']=$params['name'];
            $data['num']=(int)$params['num'];
            self::$FruitList['fruitId']=$data;
            return self::$FruitList;
        }else{
            return false;
        }
    }
    //patch 更新水果部分信息
    private static function patchData($params){
        $fruitId=(int)$params['fruit'];
        if($fruitId==0){
            return false;
        }
        if(!empty($params['name'])){
            self::$FruitList[$fruitId]['name']=$params['name'];
        }
        if(!isset($params['num'])){
            self::$FruitList[$fruitId]['num']=(int)$params['num'];
        }
        return self::$FruitList;
    }
    //delete 删除
    private static function deleteData($params)
    {
        $fruitId = (int)$params['fruit'];
        if($fruitId==0){
            return false;
        }
        unset(self::$FruitList[$fruitId]);
         return self::$FruitList;
    }
}
?>

Response.php
<?php
class Response{
    const HTTP_VERSION="HTTP/1.1";
    public  static function sendResponse($data){
        if($data){
            $code=200;
            $message='ok';
        }else{
            $code=404;
            $data=array('error'=>'Not Found');
            $message='Not Found';
        }
        //output
        header(self::HTTP_VERSION."".$code."".$message);
        $content_type=isset($_SERVER['CONTENT_TYPE'])?$_SERVER['CONTENT_TYPE']:$_SERVER['HTTP_ACCEPT'];
        if(strpos($content_type,'application/json')!==false){
            return self::encodeJSON($data);
        }else if(strpos($content_type,'application/xml')!==false){
            return self::encodeXml($data);
        }else{
            return self::encodeHtml($data);
        }
    }
    //json
    private static function encodeJson($responseData){
        header("Content-Type:application/json");
        return json_encode($responseData);
    }
    //xml
    private static function encodeXml($params){
        header("Content-Type:application/xml");
        $xml=new SimpleXMLElement('<?xml version="1.0"?><fruit></fruit>');
        foreach ($params as $key =>$value) {
            if(is_array($value)){
                 foreach($value as $k =>$v){
                    $xml->addChild($k,$v);
                 }
            }else{
                $xml->addChild($key,$value);
            }
        }
        return $xml->asXML();
    }

    //html

   private static function encodeHtml($responseData){
        header("Content-Type:text/html");
        $html="<table border='1'>";
        foreach ($responseData as $key =>$value){
            $html.="<tr>";
            if(is_array($value)){
                foreach($value as $k =>$v){
                    $html.="<td>".$k."</td><td>".$v."</td>";
                }
            }else{
                 $html.="<td>".$key."</td><td>".$value."</td>";
            }
            $html="<tr>";
        }
        $html="</table>";
        return $html;
    }
}

?>