复制代码 代码如下:

<?php
/**
+------------------------------------------------------------------------------
* Upload 文件上传类
+------------------------------------------------------------------------------
* @package Upload
* @author Anyon <Anyon@139.com>
* @version $Id: Upload.class.php 2013-3-20 21:47:23 Anyon $
+------------------------------------------------------------------------------
*/
class Upload {
private static $image = null;
private static $status = 0;
private static $suffix = null;
private static $imageType = array(\'.jpg\', \'.bmp\',\'.gif\',\'.png\');
private static $message = array(
\'0\' => \'没有错误发生，文件上传成功。\',
\'1\' => \'上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值。\',
\'2\' => \'上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值。\',
\'3\' => \'文件只有部分被上传。\',
\'4\' => \'没有文件上传。\',
\'5\' => \'未能通过安全检查的文件。\',
\'6\' => \'找不到临时文件夹。\',
\'7\' => \'文件写入失败。\',
\'8\' => \'文件类型不支持\',
\'9\' => \'上传的临时文件丢失。\',
);
//@ 开始执行文件上传
public static function start($feild = \'file\') {
if (!empty($_FILES)) {
self::$status = $_FILES[$feild][\'error\'];
if (self::$status > 0)
return array(\'status\' => self::$status, \'msg\' => self::$message[self::$status]);
self::$image = $_FILES[$feild][\'tmp_name\'];
self::$suffix = strtolower(strrchr($_FILES[$feild][\'name\'], \'.\'));
return array(\'status\' => self::_upload(), \'path\' => self::$image, \'msg\' => self::$message[self::$status]);
} else {
return array(\'status\' => self::$status, \'msg\' => self::$message[self::$status]);
}
}
//@ 私有 上传开始
private static function _upload($path = \'./upload/\') {
date_default_timezone_set(\'PRC\');
$newFile = $path . date(\'Y/m/d/His\') . rand(100, 999) . self::$suffix;
self::umkdir(dirname($newFile));
if (is_uploaded_file(self::$image) && move_uploaded_file(self::$image, $newFile)) {
self::$image = $newFile;
if (in_array(self::$suffix, self::$imageType))
return self::checkHex();
else
return self::$status = 0;
} else {
return self::$status = 9;
}
}
//@ 私有 16进制检测
private static function checkHex() {
if (file_exists(self::$image)) {
$resource = fopen(self::$image, \'rb\');
$fileSize = filesize(self::$image);
fseek($resource, 0);
if ($fileSize > 512) { // 取头和尾
$hexCode = bin2hex(fread($resource, 512));
fseek($resource, $fileSize - 512);
$hexCode .= bin2hex(fread($resource, 512));
} else { // 取全部
$hexCode = bin2hex(fread($resource, $fileSize));
}
fclose($resource);
/* 匹配16进制中的 <% ( ) %> */
/* 匹配16进制中的 <? ( ) ?> */
/* 匹配16进制中的 <script | /script> 大小写亦可*/
if (preg_match(\"/(3c25.*?28.*?29.*?253e)|(3c3f.*?28.*?29.*?3f3e)|(3C534352495054)|(2F5343524950543E)|(3C736372697074)|(2F7363726970743E)/is\", $hexCode))
self::$status = 5;
else
self::$status = 0;
return self::$status;
} else {
return self::$status = 9;
}
}
//@ 私有 创建目录
private static function umkdir($dir) {
if (!file_exists($dir) && !is_dir($dir)) {
self::umkdir(dirname($dir));
@mkdir($dir);
}
}
}