"/> ">
Heim > Backend-Entwicklung > PHP-Tutorial > 非常经典的PHP文件上传类分享_PHP

非常经典的PHP文件上传类分享_PHP

WBOY
Freigeben: 2016-05-27 10:04:33
Original
925 Leute haben es durchsucht

文件上传是项目开发中比较常见的功能,但文件上传的过程比较繁琐,只要是有文件上传的地方就需要编写这些复杂的代码。为了能在每次开发中降低功能的编写难度,也为了能节省开发时间,通常我们都会将这些反复使用的一段代码封装到一个类中。

<&#63;php 
/** 
 +----------------------------------------------------------------------------- 
 * 文件上传类 
 +----------------------------------------------------------------------------- 
 * @author Administrator 
 +----------------------------------------------------------------------------- 
 */ 
 class FileUpload{ 
   
  private $filepath;  //保存路径 
  private $allowtype=array('gif','jpg','jpeg','png','txt'); 
  private $maxsize=1000000;  //最大允许上传大小 
  private $israndname=true; //是否随机 
  private $orginame; //原始文件名 
  private $tmpname;  //临时文件名 
  private $newname;  //新文件名 
  private $filetype; //文件类型  
  private $filesize; //文件大小 
  private $errornum=''; //错误号 
  private $errormsg; //错误信息 
/** 
 +------------------------------------------------------------------------------ 
 *构造函数 
 +------------------------------------------------------------------------------ 
 * @param string $savepath  保存路径 
 * @param string $allowtype 允许类型 
 * @param string $maxsize  允许大小 
 * 
 +------------------------------------------------------------------------------ 
 */    
  function __construct($option=array()){ 
     foreach ($option as $key=>$value){ 
        
      if (!in_array($key,get_class_vars(get_class($this)))){ 
        continue; 
       } 
      $this->setOption($key, $value);  
     } 
  } 
  function uploadfile($field) { 
     $return=true; 
    if (!$this->CheckPath()) { 
      $this->errormsg=$this->geterrorNum(); 
      return false; 
    } 
    $name=$_FILES[$field]['name']; 
    $tmpname=$_FILES[$field]['tmp_name']; 
    $filesize=$_FILES[$field]['size']; 
    $error=$_FILES[$field]['error'];  
     if (is_array($name)) { 
      $errors=array(); 
       for ($i=0;$i<count($name);$i++){ 
        if ($this->getFile($name[$i],$tmpname[$i],$filesize[$i],$errors[$i])) { 
          if (!$this->CheckSize() && !$this->CheckType()) { 
            $errors=$this->getErrorNum(); 
            return false; 
            }                                 
        }else{ 
            $errors=$this->getErrorNum(); 
            return false; 
        } 
        if (!$return) { 
          $this->getFile(); 
        } 
       } 
       if ($return) { 
        $fileNames=array(); 
        for ($i=0;$i<count($name);$i++){ 
          if ($this->getFile($name[$i], $tmpname[$i], $filesize[$i], $filesize[$i])) { 
            $this->SetFileName(); 
            if (!$this->MoveFile()) { 
              $errors[]=$this->getErrorNum(); 
              $return=false; 
            }else{ 
              $fileNames[]=$this->getNewName(); 
            } 
          }         
        } 
        $this->newname=$fileNames; 
       } 
        $this->errormsg=$errors; 
        return $return; 
        
     }else{  
      if($this->getFile($name,$tmpname,filesize,$error)){ 
        if(!$this->CheckSize()){ 
          return false; 
        } 
        if(!$this->CheckType()){ 
          return false; 
        } 
         $this->SetFileName(); 
        if ($this->MoveFile()) { 
            return true; 
        }  
      }else{ 
      return false; 
      } 
        
      if (!$return) { 
      $this->setOption('ErrorNum', 0); 
      $this->errormsg=$this->geterrorNum(); 
      } 
     return $return;  
   } 
  } 
  /** 
   +------------------------------------------------------------------------ 
   *设置类属性值函数 
   +------------------------------------------------------------------------ 
   * @param mix $key 
   * @param mix $value 
   */ 
  private function setOption($key,$value){ 
    $key=strtolower($key); 
    $this->$key=$value; 
  } 
  /** 
   +--------------------------------------------------------------------------- 
   * 获取文件变量参数函数 
   +--------------------------------------------------------------------------- 
   * @param string $name 
   * @param string $tmp_name 
   * @param number $size 
   * @param number $error 
   */ 
  private function getFile($name,$tmpname,$filetype,$filesize,$error=0){  
     
    $this->setOption('TmpName', $tmpname); 
    $this->setOption('OrgiName', $name); 
    $arrstr=explode('.', $name); 
    $this->setOption('FileType', $arrstr[count($arrstr)-1]);      
    $this->setOption('FileSize', $filesize); 
    return true; 
  } 
  /** 
   +------------------------------------------------------------------------- 
   * 检查上传路径函数 
   +------------------------------------------------------------------------- 
   * @return boolean 
   */ 
  private function CheckPath(){ 
    if(empty($this->filepath)){ 
      $this->setOption('ErrorNum', -5); 
      return false; 
    } 
    if (!file_exists($this->filepath)||!is_writable($this->filepath)) { 
       if (!@mkdir($this->filepath,0755)) { 
         $this->setOption('ErrorNum',-4); 
         return false; 
       } 
    } 
    return true; 
  } 
  private function Is_Http_Post(){ 
    if (!is_uploaded_file($this->tmpname)) { 
      $this->setOption('ErrorNum',-6);  
      return false; 
    }else{ 
      return true; 
    } 
  } 
  /** 
   +-------------------------------------------------------------------- 
   *检查文件尺寸函数 
   +-------------------------------------------------------------------- 
   * @return boolean 
   */ 
  private function CheckSize(){ 
    if ($this->filesize>$this->maxsize) { 
      $this->setOption('ErrorNum', -2); 
      return false; 
    }else{ 
      return true; 
    } 
  } 
  /** 
   +--------------------------------------------------------------- 
   * 检查文件类型函数 
   +--------------------------------------------------------------- 
   * @return boolean 
   */ 
  private function CheckType(){ 
    if (in_array($this->filetype, $this->allowtype)) { 
      return true; 
    }else{ 
      $this->setOption('ErrorNum', -1); 
      return false; 
    } 
  } 
  private function SetFileName(){ 
    if ($this->israndname) { 
      $this->setOption('NewName', $this->RandName()); 
    }else{ 
      $this->setOption('NewName',$this->orginame); 
    }  
  } 
  /** 
   +----------------------------------------------------------------- 
   * 获取新文件名 
   +------------------------------------------------------------------ 
   */ 
  public function getNewName() { 
    return $this->newname; 
  } 
  private function RandName(){ 
    $rule=date("YmdHis").rand(0, 999); 
    return $rule.'.'.$this->filetype; 
  } 
  private function MoveFile(){ 
    if ($this->errornum) { 
      $filepath=rtrim($this->filaepath,'/').'/'; 
      $filepath.=$this->newname; 
      if (@move_uploaded_file($this->tmpname,$filepath)) { 
        return true; 
       }else{ 
        $this->errormsg=$this->setOption('ErrorNum',-3 ); 
       } 
    }else{ 
      return false; 
    } 
  } 
  /** 
   +---------------------------------------------------------------- 
   * 错误信息函数 
   +---------------------------------------------------------------- 
   * @return string 
   */ 
   function getErrorNum() { 
    $erstr="上传文件<font color='red'>{$this->orginame}</font>出错"; 
    switch ($this->errornum) { 
      case 4: 
       $erstr.="没有文件被上传"; 
        break; 
      case 3: 
       $erstr.="文件只被部分上传"; 
        break; 
      case 2: 
       $erstr.="上传文件超过了HTML表单MAX_FILE_SIZE指定的值"; 
        break; 
      case 1: 
       $erstr.="上传文件超过了php.ini配置文件中upload_max_filesize的值"; 
        break; 
      case 0: 
       $erstr="上传{$this->orginame}成功"; 
        break;        
      case -1: 
       $erstr="未允许的类型"; 
        break; 
      case -2: 
       $erstr.="文件过大,不能超过{$this->maxsize}个字节";  
        break; 
      case -3: 
       $erstr.="上传失败"; 
        break; 
      case -4: 
       $erstr="创建上传目录失败,请重新指定上传目录"; 
        break; 
      case -5: 
       $erstr="未指定上传路径"; 
        break; 
      case -6: 
       $erstr="非法操作"; 
        break;                    
      default: 
       $erstr.="未知错误"; 
         
    } 
    return $erstr; 
  } 
 } 
&#63;> 
Nach dem Login kopieren

以上就是本文的全部内容,希望对大家学习php程序设计有所帮助。

Quelle:php.cn
Erklärung dieser Website
Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn
Beliebte Tutorials
Mehr>
Neueste Downloads
Mehr>
Web-Effekte
Quellcode der Website
Website-Materialien
Frontend-Vorlage