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非常实用的上传类,上传效果在线演示

时间：2010-01-01

来源：互联网

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#*********************************************************
#文件名称:
inc_class.upload.php
#Copyright (c)
2007-2009 青春一度 all rights reserved.
#最后更新: 2009-08-05
#版本 : v 2.0.a
#注：转发时请保留此声明信息,这段声明不并会影响你的速度!
#如有修改请将修改后的文件以邮件形式发送给作者一份,谢谢!
#
#*********************************************************
if(!defined('IN_PHPADLEYIU'))
{
exit('Access Denied');
}
/*
//使用说明：
//声明一个上传类
include_once(ADLEYLIU_ROOT.'./inc_class.upload.php');
$_YL_UPLOAD
= array();
$yl_uploadfile = new
yl_upload_class();
$_YL_UPLOAD['yl_filedata'] =
'uploadFile';//表单名
$_YL_UPLOAD['yl_directroy'] =
'upload_files';//上传主目录
$_YL_UPLOAD['file_urldirectroy'] = '/';//
程序路径
$_YL_UPLOAD['yl_settingsnew'] =
''.date('ym').'/'.date('d').'/'.substr(time(), 0,
5).'';//上传子主目录
$_YL_UPLOAD['yl_maxsize'] = 1048576;
//这里以字节为单位(1024*2)*1024=2097152 就是 2M
$_YL_UPLOAD['yl_sizeformat'] =
'k'; //显示文件大小单位b字节,k千,m兆
$_YL_UPLOAD['yl_arrext'] =
array('gif','jpg','jpeg','png','bmp','rar','txt');//允许上传文件类型
$_YL_UPLOAD['yl_ext'] = 0; //0原文件类型上传，1统一为存为jpg
$_YL_UPLOAD['yl_prefix'] = ''.$uid.''.$yl_uploadfile -> yl_createrand(1,0).''.$cid.'';
//在文件名前缀加上特殊字符 //$uid 会员ID $cid 分类ID
$_YL_UPLOAD['yl_suffix'] = ''; //''.$yl_uploadfile -> yl_createrand(3,0).'';
//在文件名后缀加上特殊字符
$_YL_UPLOAD['thumbwidth'] = 100;
//缩略图宽
$_YL_UPLOAD['thumbheight'] = 100;
//缩略图高
$_YL_UPLOAD['maxthumbwidth'] = 500;
//大图高
$_YL_UPLOAD['maxthumbheight'] = 500;
//大图宽
//上传
$yl_uploadfile -> yl_uploadfile();
获取值:
'yl_filename' => addslashes($_YL_UPLOAD['yl_filename']),原文件名
'yl_attachment' => $_YL_UPLOAD['yl_attachment'],新文件名及路径
'yl_filesize' => $_YL_UPLOAD['yl_filesize'] ,文件大小
'yl_filetype' => $_YL_UPLOAD['yl_filetype'],文件类型
'yl_isimage' => $_YL_UPLOAD['yl_isimage'],是否是图片
'yl_isthumb' => $_YL_UPLOAD['yl_isthumb'],是否有小图片
*/
class yl_upload_class
{
function __GET($property_name)
{
if(isset($this -> $property_name))
{
return $this -> $property_name;
} else
{
return
NULL;
}
}
function __SET($property_name,
$value) {
$this -> $property_name =
$value;
}
#*********************************************************
#生成缩略图
#*********************************************************
function makethumb($srcfile) {
global $_YL_UPLOAD;
//判断文件是否存在
if (!file_exists($srcfile))
{
return '';
}
$dstfile =
$srcfile.'.small.jpg';
$bigfile =
$srcfile.'.big.jpg';
//缩略图大小
$tow =
intval($_YL_UPLOAD['thumbwidth']);
$toh =
intval($_YL_UPLOAD['thumbheight']);
if($tow < 60) $tow =
60;
if($toh < 60) $toh = 60;
$make_max = 0;
$maxtow =
intval($_YL_UPLOAD['maxthumbwidth']);
$maxtoh =
intval($_YL_UPLOAD['maxthumbheight']);
if($maxtow >= 300
&& $maxtoh >= 300) {
$make_max =
1;
}
//获取图片信息
$im = '';
if($data =
getimagesize($srcfile)) {
if($data[2] == 1)
{
$make_max =
0;//gif不处理
if(function_exists("imagecreatefromgif"))
{
$im =
imagecreatefromgif($srcfile);
}
}
elseif($data[2] == 2)
{
if(function_exists("imagecreatefromjpeg"))
{
$im =
imagecreatefromjpeg($srcfile);
}
}
elseif($data[2] == 3)
{
if(function_exists("imagecreatefrompng"))
{
$im =
imagecreatefrompng($srcfile);
}
}
}
if(!$im)
return '';
$srcw = imagesx($im);
$srch = imagesy($im);
$towh = $tow/$toh;
$srcwh =
$srcw/$srch;
if($towh <= $srcwh){
$ftow =
$tow;
$ftoh = $ftow*($srch/$srcw);
$fmaxtow = $maxtow;
$fmaxtoh =
$fmaxtow*($srch/$srcw);
} else {
$ftoh =
$toh;
$ftow = $ftoh*($srcw/$srch);
$fmaxtoh = $maxtoh;
$fmaxtow =
$fmaxtoh*($srcw/$srch);
}
if($srcw <= $maxtow
&& $srch <= $maxtoh) {
$make_max =
0;//不处理
}
if($srcw > $tow || $srch > $toh)
{
if(function_exists("imagecreatetruecolor") &&
function_exists("imagecopyresampled") && @$ni =
imagecreatetruecolor($ftow, $ftoh))
{
imagecopyresampled($ni, $im, 0, 0, 0, 0, $ftow,
$ftoh, $srcw,
$srch);
//大图片
if($make_max
&& @$maxni = imagecreatetruecolor($fmaxtow, $fmaxtoh))
{
imagecopyresampled($maxni, $im, 0, 0, 0, 0,
$fmaxtow, $fmaxtoh, $srcw, $srch);
}else if (@$maxni
= imagecreatetruecolor(round($srcw/2),
round($srch/2))){
imagecopyresampled($maxni,
$im, 0, 0, 0, 0, round($srcw/2), round($srch/2), $srcw,
$srch);
}
}
elseif(function_exists("imagecreate") &&
function_exists("imagecopyresized") && @$ni = imagecreate($ftow, $ftoh))
{
imagecopyresized($ni, $im, 0, 0, 0, 0, $ftow,
$ftoh, $srcw,
$srch);
//大图片
if($make_max
&& @$maxni = imagecreate($fmaxtow, $fmaxtoh))
{
imagecopyresized($maxni, $im, 0, 0, 0, 0,
$fmaxtow, $fmaxtoh, $srcw, $srch);
}else if (@$maxni
= imagecreate(round($srcw/2),
round($srch/2))){
imagecopyresized($maxni, $im,
0, 0, 0, 0, round($srcw/2), round($srch/2), $srcw,
$srch);
}
} else
{
return
'';
}
if(function_exists('imagejpeg'))
{
imagejpeg($ni,
$dstfile);
//大图片
if($make_max)
{
imagejpeg($maxni,
$bigfile);
}else{
imagejpeg($maxni,
$bigfile);
}
}
elseif(function_exists('imagepng')) {
imagepng($ni,
$dstfile);
//大图片
if($make_max)
{
imagepng($maxni,
$bigfile);
}else{
imagejpeg($maxni,
$bigfile);
}
}
imagedestroy($ni);
if($make_max)
{
}else{
imagedestroy($maxni);
}
}else{
if(function_exists("imagecreatetruecolor") &&
function_exists("imagecopyresampled") && @$ni =
imagecreatetruecolor($srcw, $srch))
{
imagecopyresampled($ni, $im, 0, 0, 0, 0, $srcw,
$ftoh, $srch,
$srch);
//大图片
$maxni =
imagecreatetruecolor($srch, $srch);
imagecopyresampled($maxni, $im, 0, 0, 0, 0, $srcw, $srch, $srcw,
$srch);
} elseif(function_exists("imagecreate")
&& function_exists("imagecopyresized") && @$ni =
imagecreate($ftow, $ftoh)) {
imagecopyresized($ni,
$im, 0, 0, 0, 0, $srcw, $srch, $srcw,
$srch);
//大图片
$maxni =
imagecreate($fmaxtow, $fmaxtoh);
imagecopyresized($maxni, $im, 0, 0, 0, 0, $srcw, $srch, $srcw,
$srch);
} else
{
return
'';
}
imagejpeg($ni, $dstfile);
imagejpeg($maxni,
$bigfile);
}
imagedestroy($im);
if(!file_exists($dstfile)) {
return
'';
} else {
return
$dstfile;
}
}
#*********************************************************
#获取随机数函数
#*********************************************************
function
yl_createrand($length, $numeric = 0) {
PHP_VERSION < '4.2.0'
&& mt_srand((double)microtime() * 1000000);
if($numeric)
{
$hash = sprintf('%0'.$length.'d', mt_rand(0, pow(10,
$length) - 1));
} else {
$hash =
'';
$chars =
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';///0123456789
$max
= strlen($chars) - 1;
for($i = 0; $i < $length; $i++)
{
$hash .= $chars[mt_rand(0,
$max)];
}
}
return
$hash;
}
#***************
#*********************************************************
#创建目录函数
#*********************************************************
function
createfolder($yl_path)
{
if
(!file_exists($yl_path))
{
$this ->
createfolder(dirname($yl_path));
@mkdir($yl_path,
0777);
}
return $this ->
createfolder;
}
#*********************************************************
#获取文件
名称,大小,类型,临时文件名
#*********************************************************
function
yl_getfilename($yl_type)
{
global
$_YL_UPLOAD;
return
$_FILES[$_YL_UPLOAD['yl_filedata']][$yl_type];
}
#*********************************************************
#获取文件大小
#*********************************************************
function
yl_getfilesize()
{
global
$_YL_UPLOAD;
$yl_filesize = $this ->
yl_getfilename('size');
if($yl_filesize ==
0){
$this ->
alert("请选择上传文件!");
exit;
}
if($yl_filesize
> $_YL_UPLOAD['yl_maxsize']){
switch
(strtolower($_YL_UPLOAD['yl_sizeformat'])){
case
'b':
$yl_maxsizek = $_YL_UPLOAD['yl_maxsize'] .
' B';
break;
case
'k':
$yl_maxsizek =
$_YL_UPLOAD['yl_maxsize']/1024 . '
K';
break;
case
'm':
$yl_maxsizek =
$_YL_UPLOAD['yl_maxsize']/(1024*1024) . '
M';
}
$this ->
alert("上传文件超出限制范围[".$yl_maxsizek."].K!");
exit;
}
return
$yl_filesize;
}
#*********************************************************
#获得文件扩展名
#*********************************************************
function
yl_getfiletype()
{
global
$_YL_UPLOAD;
$pathinfo = pathinfo($this -> yl_getfilename('name'));
$yl_file_ext =
strtolower($pathinfo['extension']);
//检查扩展名
if(!array_keys($_YL_UPLOAD['yl_arrext'],$yl_file_ext))
{
$this ->
alert("上传文件类型被限制!");
exit;
}
return
$yl_file_ext;
}
#*********************************************************
#上传验证
#*********************************************************
function
yl_upfile($source, $target) {
//
如果一种函数上传失败，还可以用其他函数上传
if (function_exists('move_uploaded_file')
&& @move_uploaded_file($source, $target))
{
@chmod($target, 0666);
return
$target;
} elseif (@copy($source, $target))
{
@chmod($target, 0666);
return
$target;
} elseif (@is_readable($source))
{
if ($fp = @fopen($source,'rb'))
{
@flock($fp,2);
$filedata
=
@fread($fp,@filesize($source));
@fclose($fp);
}
if
($fp = @fopen($target, 'wb')) {
@flock($fp,
2);
@fwrite($fp,
$filedata);
@fclose($fp);
@chmod
($target, 0666);
return
$target;
} else {
return
false;
}
}
}
#*********************************************************
#上传
#*********************************************************
function
yl_uploadfile()
{
global $_YL_UPLOAD;
$yl_file_path = $_YL_UPLOAD['yl_directroy'].'/'.$_YL_UPLOAD['yl_settingsnew'] ;//建立一个目录
$yl_filename = $this -> yl_getfilename('name');//原文件名
$yl_filenamenews = $_YL_UPLOAD['yl_prefix'].''.substr(time(), 5, 9).''.$_YL_UPLOAD['yl_suffix'].'';//重命名
$yl_file_size = $this -> yl_getfilesize();//获取文件大小
$yl_file_type = $this -> yl_getfiletype();//获取文件类型
if($_YL_UPLOAD['yl_ext'] ==
0){
$yl_filenamenewsext = $yl_filenamenews.'.'.$yl_file_type;//改名
}elseif ($_YL_UPLOAD['yl_ext'] == 1){
$yl_filenamenewsext = $yl_filenamenews.'.jpg';//统一改名为jpg
}
//$yl_tmp_name = str_replace(' ','',$this ->
yl_getfilename('tmp_name'));//服务器上临时文件名
$yl_tmp_name = $this -> yl_getfilename('tmp_name');//服务器上临时文件名
//检查是否已上传
if(<A
href="[email=!@is_uploaded_file($yl_tmp_name]!@is_uploaded_file($yl_tmp_name">mailto:!@is_uploaded_file($yl_tmp_name">!@is_uploaded_file($yl_tmp_name[/email]))
{
$this ->
alert("文件已上传!");
exit;
}
//检查目录是否存在,不存在则创建
if(<A
href="[email=!@is_dir(]!@is_dir(''.$_YL_UPLOAD['file_urldirectroy'].''.$yl_file_path.''">mailto:!@is_dir(''.$_YL_UPLOAD['file_urldirectroy'].''.$yl_file_path.''">!@is_dir(''.$_YL_UPLOAD['file_urldirectroy'].''.$yl_file_path.''[/email]))
{
$this ->
createfolder(''.$_YL_UPLOAD['file_urldirectroy'].''.$yl_file_path.'');//创建目录
}
//检查目录写权限
if
(<A
href="[email=!@is_writable(]!@is_writable(''.$_YL_UPLOAD['file_urldirectroy'].''.$yl_file_path.''">mailto:!@is_writable(''.$_YL_UPLOAD['file_urldirectroy'].''.$yl_file_path.''">!@is_writable(''.$_YL_UPLOAD['file_urldirectroy'].''.$yl_file_path.''[/email]))
{
$this ->
alert("上传目录没有写权限!");
exit;
}
$yl_path_name
=
''.$_YL_UPLOAD['file_urldirectroy'].''.$yl_file_path.'/'.$yl_filenamenewsext.'';
$yl_doupload = $this -> yl_upfile($yl_tmp_name, $yl_path_name);
if($yl_doUpload === false){
$this -> alert("上传失败!");
exit;
}else{
//echo
'上传成功';
//echo
'<br>';
/*
echo
'原文件名：'.$yl_filename.'';
echo
'<br>';
echo
'新文件名及目录：'.$yl_file_path.'/'.$yl_filenamenewsext;
echo
'<br>';
echo
'文件大小：'.$yl_file_size.'';
echo '<br>';
echo '文件类型：'.$yl_file_type.'';
*/
$_YL_UPLOAD['yl_filename'] = $yl_filename;
$_YL_UPLOAD['yl_attachment'] = ''.$yl_file_path.'/'.$yl_filenamenewsext.'';
$_YL_UPLOAD['yl_filesize'] = $yl_file_size;
$_YL_UPLOAD['yl_filetype'] = $yl_file_type;
//检查是否图片
if(@getimagesize($yl_path_name))
{
$_YL_UPLOAD['yl_isimage'] =
1;
///生成缩略图
if ($this -> makethumb($yl_path_name)){
$_YL_UPLOAD['yl_isthumb'] = 1;
}else{
$_YL_UPLOAD['yl_isthumb'] = 0;
}
}else{
$_YL_UPLOAD['yl_isimage'] = 0;
}
}
return
true;
}
#*********************************************************
#提示
#*********************************************************
function
alert($yl_msg)
{
echo '<html>';
echo '<head>';
echo '<title>error</title>';
echo '<meta http-equiv="content-type" content="text/html; charset=gb2312">';
echo '</head>';
echo '<body>';
echo '<script type="text/javascript">alert("'.$yl_msg.'");history.back();</script>';
echo '</body>';
echo '</html>';
exit;
}
}