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 = $imgFlag;
    }
    //產生唯一字串
    protected function getUniname(){
        return md5(uniqid(microtime(true),true));
    }
    //上傳檔案
    public function upload(){
        if($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 = '移動檔案失敗';
                $this->showError();
            }

        }else{
            $this->showError();
        }

    }
    //檢測目錄是否存在，建立目錄
    protected function checkuploadPath(){
        if(!file_exists($this->uploadPath)){
            mkdir($this->uploadPath,0777,true);

        }
    }
    //檢測檔案大小
    public function checkSize(){
        if($this->fileInfo['size'] > $this->maxSize){
            $this->Error = $this->fileInfo['name'].'檔案過大';
            return false;
        }
        return true;
    }



    //檢測是否通過HTTP、POST方式上傳
    protected function checkHTTPpost(){
        if(!is_uploaded_file($this->fileInfo['tmp_name'])){
            $this->Error = '不是通過HTTP、POST方式上傳的';
            return false;
        }
        return true;
    }

    //顯示錯誤
    protected function showError(){
        exit('<span style="color:red">'.$this->Error.'</span>');
    }

    //檢測檔案拓展名
    public function checkExt(){
        $this->Ext = strtolower(pathinfo($this->fileInfo['name'],PATHINFO_EXTENSION));
        if(!in_array($this->Ext,$this->allowExt)){
            $this->Error = '不允許的拓展名';
            return false;
        }
        return true;
    }

    //是否檢測圖片型別
    protected function imgTure(){
        if($this->imgFlag){
            if(
 
[email protected]($this->fileInfo['tmp_name'])){
                $this->Error = '不是真實圖片';
                return false;
            }
            return true;
        }
    }

    //檢測檔案格式
    public function checkMime(){
        if([email protected]_array($this->fileInfo['type'],$this->allowMime)){
            $this->Error = '不允許的圖片型別';
            return false;
        }
        return true;    
    }


    //檢測是否有錯
    public function checkError(){
        if(!is_null($this->fileInfo['error'])){
            if($this->fileInfo['error'] > 0){
            switch ($this->fileInfo['error']) {
                case 1:
                    $this->Error = '上傳檔案超過了配置檔案中upload_max_filesize選項的值';
                    break;
                case 2:
                    $this->Error = '超過表單MAX_FILE_SIZE限制的大小';
                    break;
                case 3:
                    $this->Error = '檔案上傳不完整';
                    break;
                case 4:
                    $this->Error = '沒有選擇上傳檔案';
                    break;
                case 6:
                    $this->Error = '沒有找到臨時目錄';
                    break;
                case 7:
                    $this->Error = '檔案不可寫';
                    break;
                case 8:
                    $this->Error = '由於PHP的擴充套件程式中斷檔案上傳';
                    break;
                   
                }
                return false;
            }else{
                return true;
            }
        }else{
            $this->Error = '檔案上傳出錯';
            return false;
        }
    }
}
?>