PHP封装成类（文件上传）

uploadfile.class.php

<?php /** * Created by PhpStorm. * User: huang * Date: 2017/7/19 * Time: 23:20 */header("content-type:text/html;charset=utf-8");$new = new upload();class upload{    protected $fileName;    protected $fileInfo;    protected $maxSize;    protected $allowExt;    protected $allowMime;    protected $uploadPath;    protected $imgFlag;    private $Error;    private $Ext;        public function __construct($fileName='myfile', $uploadPath='uploads', $maxSize = '2097152', $allowExt = array('jpg', 'jpeg', 'png', 'git', 'wbmp'), $allowMime =array('        image/png','image/jpeg','image/gif'),$imgFlag = true){        $this->fileName = $fileName;        $this->fileInfo = $_FILES[$this->fileName];        $this->maxSize = $maxSize;        $this->allowExt = $allowExt;        $this->allowMime = $allowMime;        $this->uploadPath = $uploadPath;        $this->imgFlag = $imgFlag;    }    //产生唯一字符串    protected function getUniname(){        return md5(uniqid(microtime(true),true));    }    //上传文件    public function upload(){        if($this->checkError()&&$this->checkSize()&&$this->checkExt()&&$this->imgTure()&&$this->checkMime()&&$this->checkHTTPpost()){            $this->checkuploadPath();            $this->uniName = $this->getUniname();            $this->destination = $this->uploadPath.'/'.$this->uniName.'.'.$this->Ext;            if(@move_uploaded_file($this->fileInfo['tmp_name'] , $this->destination)){                return $this->destination;            }else{                $this->Error = '移动文件失败';                $this->showError();            }        }else{            $this->showError();        }    }    //检测目录是否存在，创建目录    protected function checkuploadPath(){        if(!file_exists($this->uploadPath)){            mkdir($this->uploadPath,0777,true);        }    }    //检测文件大小    public function checkSize(){        if($this->fileInfo['size'] > $this->maxSize){            $this->Error = $this->fileInfo['name'].'文件过大';            return false;        }        return true;    }    //检测是否通过HTTP、POST方式上传    protected function checkHTTPpost(){        if(!is_uploaded_file($this->fileInfo['tmp_name'])){            $this->Error = '不是通过HTTP、POST方式上传的';            return false;        }        return true;    }    //显示错误    protected function showError(){        exit('<span style="color:red">'.$this->Error.'</span>');    }    //检测文件拓展名    public function checkExt(){        $this->Ext = strtolower(pathinfo($this->fileInfo['name'],PATHINFO_EXTENSION));        if(!in_array($this->Ext,$this->allowExt)){            $this->Error = '不允许的拓展名';            return false;        }        return true;    }    //是否检测图片类型    protected function imgTure(){        if($this->imgFlag){            if(!@getimagesize($this->fileInfo['tmp_name'])){                $this->Error = '不是真实图片';                return false;            }            return true;        }    }    //检测文件格式    public function checkMime(){        if(!@in_array($this->fileInfo['type'],$this->allowMime)){            $this->Error = '不允许的图片类型';            return false;        }        return true;        }    //检测是否有错    public function checkError(){        if(!is_null($this->fileInfo['error'])){            if($this->fileInfo['error'] > 0){            switch ($this->fileInfo['error']) {                case 1:                    $this->Error = '上传文件超过了配置文件中upload_max_filesize选项的值';                    break;                case 2:                    $this->Error = '超过表单MAX_FILE_SIZE限制的大小';                    break;                case 3:                    $this->Error = '文件上传不完整';                    break;                case 4:                    $this->Error = '没有选择上传文件';                    break;                case 6:                    $this->Error = '没有找到临时目录';                    break;                case 7:                    $this->Error = '文件不可写';                    break;                case 8:                    $this->Error = '由于PHP的扩展程序中断文件上传';                    break;                                   }                return false;            }else{                return true;            }        }else{            $this->Error = '文件上传出错';            return false;        }    }}?>