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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