337 lines
9.0 KiB
PHP
337 lines
9.0 KiB
PHP
<?php
|
|
class files{
|
|
|
|
/**
|
|
* upload
|
|
*
|
|
* 文件上传
|
|
*
|
|
* @param String $path e.g. could be the relative path of web htdocs directory
|
|
* @param Array $files e.g. $_FILES['Filedata']
|
|
* @param String $dir e.g. $_POST['dir']
|
|
*
|
|
* return Array $msg e.g. if($msg['error'])
|
|
*/
|
|
static function upload($path,$files,$dir)
|
|
{
|
|
$msg=array();
|
|
|
|
$general = array('doc', 'docx', 'xls', 'xlsx', 'ppt', 'htm', 'html', 'txt', 'zip', 'rar', 'gz', 'bz2','gif', 'jpg', 'jpeg', 'png', 'bmp','pdf','odt');
|
|
|
|
//文件保存目录路径
|
|
$save_path = $path;
|
|
//文件保存目录URL
|
|
$save_url = $path;
|
|
//定义允许上传的文件扩展名
|
|
$ext_arr = array(
|
|
'image' => array('gif', 'jpg', 'jpeg', 'png', 'bmp'),
|
|
'flash' => array('swf', 'flv'),
|
|
'media' => array('swf', 'flv', 'mp3', 'wav', 'wma', 'wmv', 'mid', 'avi', 'mpg', 'asf', 'rm', 'rmvb'),
|
|
'file' => array('pdf','doc', 'docx', 'xls', 'xlsx', 'ppt', 'htm', 'html', 'txt', 'zip', 'rar', 'gz', 'bz2'),
|
|
'reviewatt'=>$general,
|
|
'md'=>$general,
|
|
'literature'=>$general,
|
|
'document'=>$general,
|
|
'heihe'=>$general,
|
|
'reference' => $general
|
|
);
|
|
//最大文件大小
|
|
$max_size = 10485760;
|
|
|
|
//$save_path = realpath($save_path). '/';
|
|
|
|
//有上传文件时
|
|
if (empty($files) === false) {
|
|
//原文件名
|
|
$file_name = $files['name'];
|
|
//服务器上临时文件名
|
|
$tmp_name = $files['tmp_name'];
|
|
//文件大小
|
|
$file_size = $files['size'];
|
|
//目录名
|
|
$dir_name = empty($dir) ? 'image' : trim($dir);
|
|
//检查文件名
|
|
if (!$file_name) {
|
|
$msg['error'] = "请选择文件。";
|
|
}
|
|
//检查目录
|
|
else if (@is_dir($save_path) === false) {
|
|
$msg['error'] = "上传目录不存在。请联系管理员";
|
|
}
|
|
//检查目录写权限
|
|
else if (@is_writable($save_path) === false) {
|
|
$msg['error'] = "上传目录没有写权限。请联系管理员";
|
|
}
|
|
//检查是否已上传
|
|
else if (@is_uploaded_file($tmp_name) === false) {
|
|
$msg['error'] = "临时文件可能不是上传文件。或者文件类型不在允许的范围内，请重新上传";
|
|
}
|
|
//检查文件大小
|
|
else if ($file_size > $max_size) {
|
|
$msg['error'] = "上传文件大小超过限制。";
|
|
}
|
|
//检查目录名
|
|
else if (empty($ext_arr[$dir_name])) {
|
|
$msg['error'] = "目录名不正确。";
|
|
}
|
|
else
|
|
{
|
|
//获得文件扩展名
|
|
$temp_arr = explode(".", $file_name);
|
|
$file_ext = array_pop($temp_arr);
|
|
$file_ext = trim($file_ext);
|
|
$file_ext = strtolower($file_ext);
|
|
//检查扩展名
|
|
if (in_array($file_ext, $ext_arr[$dir_name]) === false) {
|
|
$msg['error'] = "上传文件扩展名是不允许的扩展名。\n只允许" . implode(",", $ext_arr[$dir_name]) . "格式。";
|
|
}
|
|
else
|
|
{
|
|
//创建文件夹
|
|
|
|
$dbsave = ""; //数据库中存放的路径
|
|
|
|
if ($dir_name !== '') {
|
|
$save_path .= $dir_name . "/";
|
|
$save_url .= $dir_name . "/";
|
|
$dbsave = $dir_name.'/';
|
|
if (!file_exists($save_path)) {
|
|
mkdir($save_path);
|
|
}
|
|
}
|
|
|
|
$y = date("Y");
|
|
$m = date("m");
|
|
$d = date("d");
|
|
|
|
$save_path .= $y . "/";
|
|
$save_url .= $y . "/";
|
|
$dbsave .= $y.'/';
|
|
if (!file_exists($save_path)) {
|
|
mkdir($save_path);
|
|
}
|
|
|
|
$save_path .= $m . "/";
|
|
$save_url .= $m . "/";
|
|
$dbsave .= $m.'/';
|
|
if (!file_exists($save_path)) {
|
|
mkdir($save_path);
|
|
}
|
|
|
|
$save_path .= $d . "/";
|
|
$save_url .= $d . "/";
|
|
$dbsave .= $d.'/';
|
|
if (!file_exists($save_path)) {
|
|
mkdir($save_path);
|
|
}
|
|
|
|
//新文件名
|
|
$new_file_name = date("YmdHis") . '_' . rand(10000, 99999) . '.' . $file_ext;
|
|
//移动文件
|
|
$file_path = $save_path . $new_file_name;
|
|
|
|
if (move_uploaded_file($tmp_name, $file_path) === false) {
|
|
$msg['error'] = "上传文件失败。";
|
|
}
|
|
//数据库最终存储的文件
|
|
$dbsave .= $new_file_name;
|
|
@chmod($file_path, 0644);
|
|
$file_url = $save_url . $new_file_name;
|
|
$msg['file_url'] = $file_url;
|
|
$msg['file_size'] = $file_size;
|
|
$msg['db_path'] = $dbsave;
|
|
$msg['realname'] = $file_name;
|
|
$msg['file_type'] = $dir_name;
|
|
}//检查扩展名
|
|
}//目录正确性
|
|
return $msg;
|
|
}
|
|
}//文件上传
|
|
|
|
/**
|
|
* getOne()
|
|
*
|
|
* 从数据库获取单个文件的信息
|
|
*
|
|
* @param int id
|
|
*
|
|
* return array
|
|
*/
|
|
static function getOne($db,$id){
|
|
//下载单个附件
|
|
$sql = $db->quoteInto("select a.* from attachments a where a.id=? order by a.ts_created desc",$id);
|
|
$att = $db->fetchRow($sql);
|
|
if(empty($att['id']))
|
|
{ $att['error']=='文件不存在';}
|
|
return $att;
|
|
}
|
|
|
|
/**
|
|
* getImageType()
|
|
*
|
|
* 判断文件是否为图片，如果是图片，返回图片类型、创建函数、扩展名、质量
|
|
*
|
|
* return array
|
|
*/
|
|
static function getImageType($filename)
|
|
{
|
|
|
|
//通过mime判断是否是真正的图片
|
|
|
|
$finfo = finfo_open(FILEINFO_MIME_TYPE);
|
|
$mime = finfo_file($finfo, $filename);
|
|
finfo_close($finfo);
|
|
$type = $mime;
|
|
if(!in_array($type,array('image/jpeg','image/png')))
|
|
{
|
|
return array('error'=>'F');
|
|
}else{
|
|
switch ($type){
|
|
case 'image/jpeg':
|
|
$image_create_func = 'imagecreatefromjpeg';
|
|
$image_save_func = 'imagejpeg';
|
|
$new_image_ext='jpg';
|
|
$quality = 100;
|
|
break;
|
|
case 'image/gif':
|
|
$image_create_func = 'imagecreatefromgif';
|
|
$image_save_func = 'imagegif';
|
|
$new_image_ext = 'gif';
|
|
break;
|
|
case 'image/png':
|
|
$image_create_func = 'imagecreatefrompng';
|
|
$image_save_func = 'imagepng';
|
|
$new_image_ext = 'png';
|
|
$quality = 100;
|
|
break;
|
|
default:
|
|
$image_create_func = 'imagecreatefromjpeg';
|
|
$image_save_func = 'imagejpeg';
|
|
$new_image_ext='jpg';
|
|
$quality = 100;
|
|
}
|
|
|
|
$downloadcfg = array('creatfunc'=>$image_create_func,
|
|
'savefunc'=>$image_save_func,
|
|
'ext'=>$new_image_ext,
|
|
'mime'=>$mime,
|
|
'quality'=>$quality);
|
|
|
|
return $downloadcfg;
|
|
}
|
|
|
|
}//function getimagetype
|
|
|
|
/**
|
|
* thumb
|
|
*
|
|
*
|
|
*
|
|
*/
|
|
static function thumb($filename,$w,$h){
|
|
$imgct = files::getImageType($filename);
|
|
if(isset($imgct['error'])) exit("Error");
|
|
//var_dump($imgct);exit();
|
|
$src = $imgct['creatfunc']($filename);
|
|
|
|
list($width_orig, $height_orig) = getimagesize($filename);
|
|
|
|
if($width_orig>$w)
|
|
{
|
|
$width = $w;
|
|
$ratio = $width_orig/$w;
|
|
$height = $height_orig/$ratio;
|
|
}else{
|
|
$width = $width_orig;
|
|
$height = $height_orig;
|
|
}
|
|
|
|
// 重置图片尺寸
|
|
$image_p = imagecreatetruecolor($width, $height);
|
|
$white = imagecolorallocate($image_p, 255, 255, 255);
|
|
imagefilledrectangle($image_p, 0, 0, $width, $height, $white);
|
|
|
|
imagecopyresampled($image_p, $src, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);
|
|
|
|
header("Content-type: image/jpeg");
|
|
imagejpeg($image_p);
|
|
imagedestroy($src);
|
|
imagedestroy($image_p);
|
|
}
|
|
|
|
/**
|
|
|
|
|
|
|
|
*/
|
|
static function imageMark($filename,$w,$h){
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* downloadFile
|
|
*
|
|
* 文件下载
|
|
*
|
|
* @param String $fullPath e.g. Zend_Registry::get('upload').$fileurl
|
|
*
|
|
* return file
|
|
*/
|
|
static function downloadFile( $fullPath ){
|
|
|
|
//判断是否已经输出头部
|
|
if( headers_sent() )
|
|
{
|
|
return false;
|
|
}
|
|
else{
|
|
|
|
// Required for some browsers
|
|
@apache_setenv('no-gzip', 1);
|
|
@ini_set('zlib.output_compression', 0);
|
|
|
|
// File Exists?
|
|
if( file_exists($fullPath) ){
|
|
|
|
// Parse Info / Get Extension
|
|
$fsize = filesize($fullPath);
|
|
$path_parts = pathinfo($fullPath);
|
|
$ext = strtolower($path_parts["extension"]);
|
|
|
|
// Determine Content Type
|
|
switch ($ext) {
|
|
case "pdf": $ctype="application/pdf"; break;
|
|
case "exe": $ctype="application/octet-stream"; break;
|
|
case "zip": $ctype="application/zip"; break;
|
|
case "doc": $ctype="application/msword"; break;
|
|
case "xls": $ctype="application/vnd.ms-excel"; break;
|
|
case "ppt": $ctype="application/vnd.ms-powerpoint"; break;
|
|
case "gif": $ctype="image/gif"; break;
|
|
case "png": $ctype="image/png"; break;
|
|
case "jpeg":
|
|
case "jpg": $ctype="image/jpg"; break;
|
|
default: $ctype="application/force-download";
|
|
}
|
|
|
|
header('Content-Description: File Transfer');
|
|
header("Cache-Control: private",false);
|
|
header("Content-Type: $ctype");
|
|
header("Content-Disposition: attachment; filename=\"".basename($fullPath)."\";" );
|
|
header("Content-Transfer-Encoding: binary\n");
|
|
header("Expires: 0");
|
|
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
|
|
header("Pragma: public");
|
|
header("Content-Length: ".$fsize);
|
|
ob_clean();
|
|
flush();
|
|
if(readfile($fullPath))
|
|
return true;
|
|
else
|
|
return false;
|
|
} else
|
|
{return false;}
|
|
}
|
|
} //文件下载
|
|
|
|
} |