实现多文件上传php类

多文件上传是PHP中的一个基础应用，反正PHPer都会遇到的问题，现在就介绍一个功能完善、强大的多文件上传类给大家吧，能用上这个类的地方会很多

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代码如下

复制代码

class Upload{  var $saveName;// 保存名  var $savePath;// 保存路径  var $fileFormat = array('gif','jpg','doc','application/octet-stream');// 文件格式&MIME限定  var $overwrite = 0;// 覆盖模式  var $maxSize = 0;// 文件最大字节  var $ext;// 文件扩展名  var $thumb = 0;// 是否生成缩略图  var $thumbWidth = 130;// 缩略图宽  var $thumbHeight = 130;// 缩略图高  var $thumbPrefix = "_thumb_";// 缩略图前缀  var $errno;// 错误代号  var $returnArray= array();// 所有文件的返回信息  var $returninfo= array();// 每个文件返回信息 // 构造函数 // @param $savePath 文件保存路径 // @param $fileFormat 文件格式限制数组 // @param $maxSize 文件最大尺寸 // @param $overwriet 是否覆盖 1 允许覆盖 0 禁止覆盖  function Upload($savePath, $fileFormat='',$maxSize = 0, $overwrite = 0) {   $this->setSavepath($savePath);   $this->setFileformat($fileFormat);   $this->setMaxsize($maxSize);   $this->setOverwrite($overwrite);   $this->setThumb($this->thumb, $this->thumbWidth,$this->thumbHeight);   $this->errno = 0;  } // 上传 // @param $fileInput 网页Form(表单)中input的名称 // @param $changeName 是否更改文件名  function run($fileInput,$changeName = 1){   if(isset($_FILES[$fileInput])){    $fileArr = $_FILES[$fileInput];    if(is_array($fileArr['name'])){//上传同文件域名称多个文件     for($i = 0; $i      $ar['tmp_name'] = $fileArr['tmp_name'][$i];      $ar['name'] = $fileArr['name'][$i];      $ar['type'] = $fileArr['type'][$i];      $ar['size'] = $fileArr['size'][$i];      $ar['error'] = $fileArr['error'][$i];      $this->getExt($ar['name']);//取得扩展名，赋给$this->ext，下次循环会更新      $this->setSavename($changeName == 1 ? '' : $ar['name']);//设置保存文件名      if($this->copyfile($ar)){       $this->returnArray[] =  $this->returninfo;      }else{       $this->returninfo['error'] = $this->errmsg();       $this->returnArray[] =  $this->returninfo;      }     }     return $this->errno ?  false :  true;    }else{//上传单个文件     $this->getExt($fileArr['name']);//取得扩展名     $this->setSavename($changeName == 1 ? '' : $fileArr['name']);//设置保存文件名     if($this->copyfile($fileArr)){      $this->returnArray[] =  $this->returninfo;     }else{      $this->returninfo['error'] = $this->errmsg();      $this->returnArray[] =  $this->returninfo;     }     return $this->errno ?  false :  true;    }    return false;   }else{    $this->errno = 10;    return false;   }  } // 单个文件上传 // @param $fileArray 文件信息数组  function copyfile($fileArray){   $this->returninfo = array();   // 返回信息   $this->returninfo['name'] = $fileArray['name'];   $this->returninfo['md5'] = @md5_file($fileArray['tmp_name']);   $this->returninfo['saveName'] = $this->saveName;   $this->returninfo['size'] = number_format( ($fileArray['size'])/1024 , 0, '.', ' ');//以KB为单位   $this->returninfo['type'] = $fileArray['type'];   // 检查文件格式   if (!$this->validateFormat()){    $this->errno = 11;    return false;   }   // 检查目录是否可写   if(!@is_writable($this->savePath)){    $this->errno = 12;    return false;   }   // 如果不允许覆盖，检查文件是否已经存在   //if($this->overwrite == 0 && @file_exists($this->savePath.$fileArray['name'])){   // $this->errno = 13;   // return false;   //}   // 如果有大小限制，检查文件是否超过限制   if ($this->maxSize != 0 ){    if ($fileArray["size"] > $this->maxSize){     $this->errno = 14;     return false;    }   }   // 文件上传   if(!@move_uploaded_file($fileArray["tmp_name"], $this->savePath.$this->saveName)){    $this->errno = $fileArray["error"];    return false;   }elseif( $this->thumb ){// 创建缩略图    $CreateFunction = "imagecreatefrom".($this->ext == 'jpg' ? 'jpeg' : $this->ext);    $SaveFunction = "image".($this->ext == 'jpg' ? 'jpeg' : $this->ext);    if (strtolower($CreateFunction) == "imagecreatefromgif"     && !function_exists("imagecreatefromgif")) {     $this->errno = 16;     return false;    } elseif (strtolower($CreateFunction) == "imagecreatefromjpeg"     && !function_exists("imagecreatefromjpeg")) {     $this->errno = 17;     return false;    } elseif (!function_exists($CreateFunction)) {     $this->errno = 18;     return false;    }         $Original = @$CreateFunction($this->savePath.$this->saveName);    if (!$Original) {$this->errno = 19; return false;}    $originalHeight = ImageSY($Original);    $originalWidth = ImageSX($Original);    $this->returninfo['originalHeight'] = $originalHeight;    $this->returninfo['originalWidth'] = $originalWidth;    /*    if (($originalHeight thumbHeight     && $originalWidth thumbWidth)) {     // 如果比期望的缩略图小，那只Copy     move_uploaded_file($this->savePath.$this->saveName,      $this->savePath.$this->thumbPrefix.$this->saveName);    } else {     if( $originalWidth > $this->thumbWidth ){// 宽 > 设定宽度      $thumbWidth = $this->thumbWidth ;      $thumbHeight = $this->thumbWidth * ( $originalHeight / $originalWidth );      if($thumbHeight > $this->thumbHeight){// 高 > 设定高度       $thumbWidth = $this->thumbHeight * ( $thumbWidth / $thumbHeight );       $thumbHeight = $this->thumbHeight ;      }     }elseif( $originalHeight > $this->thumbHeight ){// 高 > 设定高度      $thumbHeight = $this->thumbHeight ;      $thumbWidth = $this->thumbHeight * ( $originalWidth / $originalHeight );      if($thumbWidth > $this->thumbWidth){// 宽 > 设定宽度       $thumbHeight = $this->thumbWidth * ( $thumbHeight / $thumbWidth );       $thumbWidth = $this->thumbWidth ;      }     }     */     $radio=max(($originalWidth/$this->thumbWidth),($originalHeight/$this->thumbHeight));     $thumbWidth=(int)$originalWidth/$radio;     $thumbHeight=(int)$originalHeight/$radio;     if ($thumbWidth == 0) $thumbWidth = 1;     if ($thumbHeight == 0) $thumbHeight = 1;     $createdThumb = imagecreatetruecolor($thumbWidth, $thumbHeight);     if ( !$createdThumb ) {$this->errno = 20; return false;}     if ( !imagecopyresampled($createdThumb, $Original, 0, 0, 0, 0,      $thumbWidth, $thumbHeight, $originalWidth, $originalHeight) )      {$this->errno = 21; return false;}     if ( !$SaveFunction($createdThumb,      $this->savePath.$this->thumbPrefix.$this->saveName) )      {$this->errno = 22; return false;}       }   // 删除临时文件   /*   if(!@$this->del($fileArray["tmp_name"])){    return false;   }   */   return true;  } // 文件格式检查,MIME检测  function validateFormat(){   if(!is_array($this->fileFormat)    || in_array(strtolower($this->ext), $this->fileFormat)    || in_array(strtolower($this->returninfo['type']), $this->fileFormat) )    return true;   else    return false;  } // 获取文件扩展名 // @param $fileName 上传文件的原文件名  function getExt($fileName){   $ext = explode(".", $fileName);   $ext = $ext[count($ext) - 1];   $this->ext = strtolower($ext);  } // 设置上传文件的最大字节限制 // @param $maxSize 文件大小(bytes) 0:表示无限制  function setMaxsize($maxSize){   $this->maxSize = $maxSize;  } // 设置文件格式限定 // @param $fileFormat 文件格式数组  function setFileformat($fileFormat){   if(is_array($fileFormat)){$this->fileFormat = $fileFormat ;}  } // 设置覆盖模式 // @param overwrite 覆盖模式 1:允许覆盖 0:禁止覆盖  function setOverwrite($overwrite){   $this->overwrite = $overwrite;  } // 设置保存路径 // @param $savePath 文件保存路径：以 "/" 结尾，若没有 "/"，则补上  function setSavepath($savePath){   $this->savePath = substr( str_replace("\","/", $savePath) , -1) == "/"   ? $savePath : $savePath."/";  } // 设置缩略图 // @param $thumb = 1 产生缩略图 $thumbWidth,$thumbHeight 是缩略图的宽和高  function setThumb($thumb, $thumbWidth = 0,$thumbHeight = 0){   $this->thumb = $thumb;   if($thumbWidth) $this->thumbWidth = $thumbWidth;   if($thumbHeight) $this->thumbHeight = $thumbHeight;  } // 设置文件保存名 // @param $saveName 保存名，如果为空，则系统自动生成一个随机的文件名  function setSavename($saveName){   if ($saveName == ''){  // 如果未设置文件名，则生成一个随机文件名    $name = date('YmdHis')."_".rand(100,999).'.'.$this->ext;    //判断文件是否存在,不允许重复文件    if(file_exists($this->savePath . $name)){     $name = setSavename($saveName);     }   } else {    $name = $saveName;   }   $this->saveName = $name;  } // 删除文件 // @param $fileName 所要删除的文件名  function del($fileName){   if(!@unlink($fileName)){    $this->errno = 15;    return false;   }   return true;  } // 返回上传文件的信息  function getInfo(){   return $this->returnArray;  } // 得到错误信息  function errmsg(){   $uploadClassError = array(    0 =>'There is no error, the file uploaded with success. ',    1 =>'The uploaded file exceeds the upload_max_filesize directive in php.ini.',    2 =>'The uploaded file exceeds the MAX_FILE_SIZE that was specified in the HTML form.',    3 =>'The uploaded file was only partially uploaded. ',    4 =>'No file was uploaded. ',    6 =>'Missing a temporary folder. Introduced in PHP 4.3.10 and PHP 5.0.3. ',    7 =>'Failed to write file to disk. Introduced in PHP 5.1.0. ',    10 =>'Input name is not unavailable!',    11 =>'The uploaded file is Unallowable!',    12 =>'Directory unwritable!',    13 =>'File exist already!',    14 =>'File is too big!',    15 =>'Delete file unsuccessfully!',    16 =>'Your version of PHP does not appear to have GIF thumbnailing support.',    17 =>'Your version of PHP does not appear to have JPEG thumbnailing support.',    18 =>'Your version of PHP does not appear to have pictures thumbnailing support.',    19 =>'An error occurred while attempting to copy the source image .      Your version of php ('.phpversion().') may not have this image type support.',    20 =>'An error occurred while attempting to create a new image.',    21 =>'An error occurred while copying the source image to the thumbnail image.',    22 =>'An error occurred while saving the thumbnail image to the filesystem.      Are you sure that PHP has been configured with both read and write access on this folder?',    );   if ($this->errno == 0)    return false;   else    return $uploadClassError[$this->errno];  } } ?> 如何使用这个类呢？ //如果收到表单传来的参数，则进行上传处理，否则显示表单 if(isset($_FILES['uploadinput'])){  //建目录函数，其中参数$directoryName最后没有"/"，  //要是有的话，以'/'打散为数组的时候，最后将会出现一个空值  function makeDirectory($directoryName) {   $directoryName = str_replace("\","/",$directoryName);   $dirNames = explode('/', $directoryName);   $total = count($dirNames) ;   $temp = '';   for($i=0; $i    $temp .= $dirNames[$i].'/';    if (!is_dir($temp)) {     $oldmask = umask(0);     if (!mkdir($temp, 0777)) exit("不能建立目录 $temp");     umask($oldmask);    }   }   return true;  }  if($_FILES['uploadinput']['name'] ""){   //包含上传文件类   require_once ('upload_class.php');   //设置文件上传目录   $savePath = "upload";   //创建目录   makeDirectory($savePath);   //允许的文件类型   $fileFormat = array('gif','jpg','jpge','png');   //文件大小限制，单位: Byte，1KB = 1000 Byte   //0 表示无限制，但受php.ini中upload_max_filesize设置影响   $maxSize = 0;   //覆盖原有文件吗？ 0 不允许  1 允许   $overwrite = 0;   //初始化上传类   $f = new Upload( $savePath, $fileFormat, $maxSize, $overwrite);   //如果想生成缩略图，则调用成员函数 $f->setThumb();   //参数列表: setThumb($thumb, $thumbWidth = 0,$thumbHeight = 0)   //$thumb=1 表示要生成缩略图，不调用时，其值为 0   //$thumbWidth  缩略图宽，单位是像素(px)，留空则使用默认值 130   //$thumbHeight 缩略图高，单位是像素(px)，留空则使用默认值 130   $f->setThumb(1);      //参数中的uploadinput是表单中上传文件输入框input的名字   //后面的0表示不更改文件名，若为1，则由系统生成随机文件名   if (!$f->run('uploadinput',1)){    //通过$f->errmsg()只能得到最后一个出错的信息，    //详细的信息在$f->getInfo()中可以得到。    echo $f->errmsg()." n";   }   //上传结果保存在数组returnArray中。   echo " ";<br>   print_r($f->getInfo());<br>   echo " ";  } }else{ ?> Send this file: } ?>