<?php
/**
 * Created by PhpStorm.
 * User: john shuxian
 * Date: 2018/6/22
 * Time: 16:58
 */
error_reporting(E_ALL);
class uploadsController
{
    protected $ext;#如png,jpg
    protected $max_file_size;
    protected $save_path;
    protected $error_msg = array();
    protected $files;#表单name名
    protected $realname;#文件真实名
    protected $type;#文件类型 如image flash
    protected $allow_ext = array();
    public function __construct($files)
    {
        //定义允许上传的文件扩展名
        $this->allow_ext = array(
            'image' => array('gif', 'jpg', 'jpeg', 'png', 'bmp'),
            'flash' => array('swf', 'flv'),
            'media' => array('swf', 'flv', 'mp3', 'wav', 'wm a', 'wmv', 'mid', 'avi', 'mpg', 'asf', 'rm', 'rmvb'),
            'file' => array('doc', 'docx', 'xls', 'xlsx', 'pp t', 'htm', 'html', 'txt', 'zip', 'rar', 'gz', 'bz2','sql'),
        );
        $this->max_file_size = 90*1024*1024;
        $this->save_path = "./uploads/";
        $this->files = $files;
    }
    public function uploads()
    {
        if($this->checkError($_FILES[$this->files])){
            if(!file_exists($this->save_path)){
                //文件夹不存在时，自动创建目录
                mkdir($this->save_path);
            }
            $new_name = $this->randomName($this->ext);
            if(move_uploaded_file($_FILES[$this->files]['tmp_name'],$new_name) === false){
            array_push($this->error_msg,"文件上传失败，请重试");
            $this->dd($this->error_msg);
            }else{
                return json_encode(array('type'=>"success",'new_file'=>$new_name));
            }
        }
    }
    /**
     * 返回随机文件名
     * @param $ext
     * @return string
     */
    public function randomName($ext){
        return $this->save_path.date("YmdHis")."_".rand(1000,9000).".".$ext;
    }
    /**
     * 检查错误
     * @param $files_post
     * @return bool
     */
    public function checkError($files_post)
    {
        if(empty($files_post)){
            array_push($this->error_msg,"未知错误");
            $this->dd($this->error_msg,false);
            return false;
        }else{
            $error = $files_post['error'];
            if($error!=0){
                switch ($error){
                    case 1:
                        array_push($this->error_msg,"上传文件超过系统设置");
                        break;
                    case 2:
                        array_push($this->error_msg,"上传的文件大小超过了HTML表单设置的MAX_FILE_SIZE选项设置的值");
                        break;
                    case 3:
                        array_push($this->error_msg,"文件只有部分被上传");
                        break;
                    case 4:
                        array_push($this->error_msg,"没有文件被上传");
                        break;
                    case 6:
                        array_push($this->error_msg,"找不到临时文件夹");
                        break;
                    case 7:
                        array_push($this->error_msg,"文件写入失败");
                        break;
                }
                return false;
            }else{
                    $this->realname = $files_post['name'];
                    $this->ext =explode('.',$this->realname)[1];
                    $this->type = explode('/',$files_post['type'])[0];
                    if(isset($this->allow_ext[$this->type])&&in_array($this->ext,$this->allow_ext[$this->type])){
                        if($files_post['size']>$this->max_file_size){
                            array_push($this->error_msg,"文件大小超出限制，请选择小于".$this->max_file_size/(1024*1024)."M的文件");
                            $this->dd($this->error_msg);
                        }
                    return true;
                }else{
                    array_push($this->error_msg,"文件类型不支持");
                    $this->dd($this->error_msg);
                    return false;
                }
            }
        }
    }
    public function dd(array $values,$echo = true){
        $log_name = "./".date("Y-m-d").".log";
        if(!$echo){
            $file = fopen($log_name,'w+');
            if(!is_writable($log_name)){
                array_push($this->error_msg,"日志文件不可写，请检查文件权限");
                var_dump($this->error_msg);
                die();
            }
            foreach ($values as $v){
                $vv = $v;
                if(!is_string($v) && !is_numeric($v)){
                    $vv = json_encode($v);
                }
                $vv.=PHP_EOL;
                fwrite($file,$vv);
            }
            fclose($file);
        }else{
            var_dump($values);
            die();
        }
    }
}
$uploads = new uploadsController('pic');
$uploads->uploads();