<?php
/**
 *
 */
namespace apijson;
use Db;
class Api
{
 public $param; //数组参数
 public $action; //操作

 public $allowTable; //允许操作的表
 public $allowAction; //允许的操作

 public $table; //表名
 public $table_prefix
 /**
 * init
 * 不传参数 默认从php://input 读取 json 从url读取 action
 * 传参数 则 指定param 与 action
 */
 public function __construct($param =null,$action =null)
 {
 if (!$param) {
 $param = file_get_contents('php://input', 'r');
 $param = $param ?? [];
 }
 if(!is_array($param)){
 $param = json_decode($param,1);
 }
 if(!$param){
 throw new \Exception("apijson:param empty or invalid", 1);
 }
 if(!$action){
 $action = substr($_SERVER['REQUEST_URI'], strrpos($_SERVER['REQUEST_URI'],"/")+1);
 if(!in_array($action, ['get','gets','head','heads','post','put','delete'])){
 throw new \Exception("apijson:action not exsit or wrong", 1);
 }
 }
 $this->param = $param;
 $this->action = $action;
 }
 /**
 * 执行操作
 */
 public function exe(){

 }
 /**
 * 解析param
 */
 private function parse(){
 foreach ($this->param as $k => $v) {
 
 }
 }
}