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php 资料上传类

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Release: 2016-06-13 12:50:01
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php 文件上传类

<?php
/**
* php 文件上传类
* www.jbxue.com
*/
class UploadFile {
 /**
  * 允许的上传文件类型
  * @var array $allowFileTypes
  * @access private
  */
 private $allowFileTypes = array('jpeg','jpg','gif','bmp','png');

 /**
  * 允许的上传文件大小,单位字节
  * @var int $maxFileSize
  * @access public
  */
 public $maxFileSize = 8388608;

 /**
  * 构造函数
  */
 public function __construct() {

 }

 /**
  * 设置允许的文件类型
  * @param mixed $fileTypes 文件类型列表可以是数组和字符串,用“,”号隔开
  * @return void
  * @access public
  */
 public function setAllowFileType($fileTypes) {
  if (!is_array($fileTypes)) {
   $this->allowFileTypes = explode(',', $fileTypes);
  } else {
   $this->allowFileTypes = $fileTypes;
  }
  return;
 }

 /**
  * 上传文件
  * @param string $fileField  要上传的文件如$_FILES['file']
  * @param string $destFolder 上传的目录,会自动建立
  * @param string $fileTypes   上传后文件命名方式0使用原文件名1使用当前时间戳作为文件名
  * @return int
  * @access public
  */
 public function upload($fileField, $destFolder = './', $fileNameType = 1) {

  switch ($fileField['error']) {
   case UPLOAD_ERR_OK : //其值为 0,没有错误发生,文件上传成功。
   $upload_succeed = true;
   break;
   case UPLOAD_ERR_INI_SIZE : //其值为 1,上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值。
   case UPLOAD_ERR_FORM_SIZE : //其值为 2,上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值。
   $errorMsg = '文件上传失败!失败原因:文件大小超出限制!';
   $errorCode = -103;
   $upload_succeed = false;
   break;
   case UPLOAD_ERR_PARTIAL : //值:3; 文件只有部分被上传。
   $errorMsg = '文件上传失败!失败原因:文件只有部分被上传!';
   $errorCode = -101;
   $upload_succeed = false;
   break;
   case UPLOAD_ERR_NO_FILE : //值:4; 没有文件被上传。
   $errorMsg = '文件上传失败!失败原因:没有文件被上传!';
   $errorCode = -102;
   $upload_succeed = false;
   break;
   case UPLOAD_ERR_NO_TMP_DIR : //其值为 6,找不到临时文件夹。PHP 4.3.10 和 PHP 5.0.3 引进。
   $errorMsg = '文件上传失败!失败原因:找不到临时文件夹!';
   $errorCode = -102;
   $upload_succeed = false;
   break;
   case UPLOAD_ERR_CANT_WRITE : //其值为 7,文件写入失败。PHP 5.1.0 引进。
   $errorMsg = '文件上传失败!失败原因:文件写入失败!';
   $errorCode = -102;
   $upload_succeed = false;
   break;
   default : //其它错误
   $errorMsg = '文件上传失败!失败原因:其它!';
   $errorCode = -100;
   $upload_succeed = false;
   break;
  }
  if ($upload_succeed) {
   if ($fileField['size']>$this->maxFileSize) {
    $errorMsg = '文件上传失败!失败原因:文件大小超出限制!';
    $errorCode = -103;
    $upload_succeed = false;
   }
   if ($upload_succeed) {
    $fileExt = FileSystem::fileExt($fileField['name']);
    if (!in_array(strtolower($fileExt),$this->allowFileTypes)) {
     $errorMsg = '文件上传失败!失败原因:文件类型不被允许!';
     $errorCode = -104;
     $upload_succeed = false;
    }
   }
  }
  if ($upload_succeed) {
   if (!is_dir($destFolder) && $destFolder!='./' && $destFolder!='../') {
    $dirname = '';
    $folders = explode('/',$destFolder);
    foreach ($folders as $folder) {
     $dirname .= $folder . '/';
     if ($folder!='' && $folder!='.' && $folder!='..' && !is_dir($dirname)) {
      mkdir($dirname);
     }
    }
    chmod($destFolder,0777);
   }
   switch ($fileNameType) {
    case 1:
     $fileName = date('YmdHis');
     $dot = '.';
     $fileFullName = $fileName . $dot . $fileExt;
     $i = 0;
     //判断是否有重名文件
     while (is_file($destFolder . $fileFullName)) {
      $fileFullName = $fileName . $i++ . $dot . $fileExt;
     }
     break;
    case 2:
     $fileFullName = date('YmdHis');
     $i = 0;
     //判断是否有重名文件
     while (is_file($destFolder . $fileFullName)) {
      $fileFullName = $fileFullName . $i++;
     }
     break;
    default:
     $fileFullName = $fileField['name'];
     break;
   }
   //die($destFolder . $fileFullName);
   $tempfile = str_replace('\\','\',$fileField['tmp_name']);
   //$files =
   if (move_uploaded_file($tempfile, $destFolder . $fileFullName)) {
    return $fileFullName;
   } else {
    $errorMsg = $destFolder.$fileFullName." 文件上传失败!失败原因:本地文件系统读写权限出错!";
    $errorCode = -105;
    $upload_succeed = false;
   }
  }
  if (!$upload_succeed) {
   throw new Exception($errorMsg,$errorCode);
  }
 }
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