实现多文件上传php类

时间：2015-01-23 来源：西部数据作者：西部数据

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,代码如下:

<?php

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; $i < count($fileArr['name']); $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 < $this->thumbHeight

    && $originalWidth < $this->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？

<?php

//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; $i<$total; $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()."<br>n";

  }

  //上传结果保存在数组returnArray中。

  echo "<pre>";

  print_r($f->getInfo());

  echo "</pre>";

}

}else{

?>

<form enctype="multipart/form-data" action="" method="POST">

Send this file: <br />

<input name="uploadinput[]" type="file"><br />

<input name="uploadinput[]" type="file"><br />

<input name="uploadinput[]" type="file"><br />

<input type="submit" value="Send File"><br />

</form>

<?php

}

?>