php经典文件上传类

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php经典文件上传类
#*********************************************************
#文件名称:
inc_class.upload.php
#功能描述: 上传文件类
#程序制作：青春一度(adleyliu)
#联系qq 
：14339095

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($tow 60;
  if($toh

  $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    $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 && $srch    $make_max =
0;//不处理
  }
  if($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, $numeric = 0) {
  PHP_VERSION && mt_srand((double)microtime() * 1000000);
  if($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 {
    $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 = 
$this ->
yl_getfilename('tmp_name');//服务器上临时文件名
  //检查是否已上传
  if( href="mailto:!@is_uploaded_file($yl_tmp_name">!@is_uploaded_file

($yl_tmp_name))
{
   $this ->
alert("文件已上传!");
   exit;
  }
  //检查目录是否存在,不存在则创建
  if( href="mailto:!@is_dir(''.$_YL_UPLOAD

['file_urldirectroy'].''.$yl_file_path.''">!@is_dir(''.$_YL_UPLOAD

['file_urldirectroy'].''.$yl_file_path.''))
{
   $this ->
createfolder(''.$_YL_UPLOAD['file_urldirectroy'].''.$yl_file_path.'');//创建

目录
  }
  //检查目录写权限
  if
( href="mailto:!@is_writable(''.$_YL_UPLOAD

['file_urldirectroy'].''.$yl_file_path.''">!@is_writable(''.$_YL_UPLOAD

['file_urldirectroy'].''.$yl_file_path.''))
{
   $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)
  {
   $this ->
alert("上传失败!");
   exit;
  }else{
   //echo
'上传成功';
   //echo
'
';
   /*
   echo
'原文件名：'.$yl_filename.'';
   echo
'
';
   echo
'新文件名及目录：'.$yl_file_path.'/'.$yl_filenamenewsext;
   echo
'
';
   echo
'文件大小：'.$yl_file_size.'';
   echo
'
';
   echo
'文件类型：'.$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
'';
  echo '

';
  echo
'';
  echo ' http-equiv="content-type" content="text/html;
charset=gb2312">';
  echo '';
  echo
'';
  echo '<script></script> type="text/javascript">alert("'.$yl_msg.'");history.back();';
  echo
'';
  echo
'';
  exit;
 }
}