<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2016 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: 流年 <liu21st@gmail.com>
// +----------------------------------------------------------------------

// 应用公共文件

function xml_to_array( $xml )
{
    $reg = "/<(\\w+)[^>]*?>([\\x00-\\xFF]*?)<\\/\\1>/";
    if(preg_match_all($reg, $xml, $matches))
    {
        $count = count($matches[0]);
        $arr = array();
        for($i = 0; $i < $count; $i++)
        {
            $key = $matches[1][$i];
            $val = xml_to_array( $matches[2][$i] );  // 递归
            if(array_key_exists($key, $arr))
            {
                if(is_array($arr[$key]))
                {
                    if(!array_key_exists(0,$arr[$key]))
                    {
                        $arr[$key] = array($arr[$key]);
                    }
                }else{
                    $arr[$key] = array($arr[$key]);
                }
                $arr[$key][] = $val;
            }else{
                $arr[$key] = $val;
            }
        }
        return $arr;
    }else{
        return $xml;
    }
}



/**
 * 通用返回api接口
 * @param $status 业务状态码
 * @param $message  提示信息
 * @param $data  数据
 * @param $httpCode  http状态码
 */
function show($status,$message="SUCCESS",$data=[],$httpCode=200){
    $data = [
        "status" => $status,
        "message" => $message,
        "data" => $data
    ];
    return json($data,$httpCode);
}

/**
 * 保存网络文件下载到本地
 * @param $url
 * @param string $save_dir
 * @param string $filename
 * @param int $type
 * @return array
 */
function getFile($url,$save_dir='',$filename='',$type=0){
    if(trim($url)==''){
        return array('file_name'=>'','save_path'=>'','error'=>1);
    }
    if(trim($save_dir)==''){
        $save_dir='./';
    }
    if(trim($filename)==''){//保存文件名
        $ext=strrchr($url,'.');
        //改成支持各种格式文件,所以不判断了
//        if($ext!='.gif'&&$ext!='.jpg'&&$ext!='.png'&&$ext!='.jpeg'){
//            return array('file_name'=>'','save_path'=>'','error'=>3);
//        }
        $filename=time().rand(0,10000).$ext;
    }
    if(0!==strrpos($save_dir,'/')){
        $save_dir.='/';
    }
    //创建保存目录
    if(!file_exists($save_dir)&&!mkdir($save_dir,0777,true)){
        return array('file_name'=>'','save_path'=>'','error'=>5);
    }

    //获取远程文件所采用的方法
    if($type){
        $ch=curl_init();
        $timeout=5;
        curl_setopt($ch,CURLOPT_URL,$url);
        curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
        curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
        $img=curl_exec($ch);
        curl_close($ch);
    }else{

        try {
            ob_start();
            readfile($url);
            $img=ob_get_contents();
            ob_end_clean();
        }catch (\Exception $e){
            return null;
        }


    }
    //$size=strlen($img);
    //文件大小
    $fp2=@fopen($save_dir.$filename,'w');
    fwrite($fp2,$img);
    fclose($fp2);
    unset($img,$url);
    return array('file_name'=>$filename,'save_path'=>$save_dir.$filename,'error'=>0);
}

/**
 * 发送HTTP请求方法
 * @param  string $url    请求URL
 * @param  array  $params 请求参数
 * @param  string $method 请求方法GET/POST
 * @return array  $data   响应数据
 */
function http($url, $params = [], $method = 'GET', $header = array(), $multi = false){
    $opts = array(
        CURLOPT_TIMEOUT        => 30,
        CURLOPT_RETURNTRANSFER => 1,
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_SSL_VERIFYHOST => false,
        CURLOPT_HTTPHEADER     => $header
    );
    /* 根据请求类型设置特定参数 */
    switch(strtoupper($method)){
        case 'GET':
            $opts[CURLOPT_URL] = $url . '?' . http_build_query($params);
            break;
        case 'POST':
            //判断是否传输文件
            $params = $multi ? $params : http_build_query($params);
            $opts[CURLOPT_URL] = $url;
            $opts[CURLOPT_POST] = 1;
            $opts[CURLOPT_POSTFIELDS] = $params;
            break;
        default:
            throw new Exception('不支持的请求方式！');
    }
    /* 初始化并执行curl请求 */
    $ch = curl_init();
    curl_setopt_array($ch, $opts);
    $data  = curl_exec($ch);
    $error = curl_error($ch);
    curl_close($ch);
    if($error) throw new Exception('请求发生错误：' . $error);
    return  $data;
}