文件上传终结者Ⅰ
上传|终结者
PHP代码:--------------------------------------------------------------------------------
/*
------------------------------------------------------------------------------------
类名:Lwguploadandquery
说明:sql语句执行和文件上传类,是Lwgupload类的子类
作者:龙卫国
网络user:lwg888
邮箱:lwg888@163.com
使用、修改、传播请保留作者信息
------------------------------------------------------------------------------------
*/
require_once(dirname(__FILE__)."/Lwgdb.inc.php");//数据库连接与查询类
require_once(dirname(__FILE__)."/Lwgupload.inc.php");//父类
class Lwguploadandquery extends Lwgupload{
var $sql;//sql语句
var $url;//文件上传成功后转向的url
//重要提示:sql语句写法:
//$sql=sprintf("update test1 set name='%s', image1='%s', image2='%s' where id='%d'",$_POST['name'],"image1_name","image2_name",$_POST['id']);
//"image1_name","image2_name"中,image1和image2是文件域的name或id,后面加了"_name"后缀,便于下面找到它并修改它
function Lwguploadandquery($sql="",$uploadfield="",$url="",$uploadpath="",$maxsize="",$ftype="all"){
$this->sql=$sql;
$this->url=$url;
$this->Lwgupload($uploadfield,$uploadpath,$maxsize,$ftype);
}
function run(){
if (empty($this->sql))return $this->output("没有可执行的SQL语句。");
if (!is_array($this->uploadfield))$this->uploadfield=array($this->uploadfield);//如果不为数组改为数组,便于后面代码的简化
if (!is_array($this->maxsize))$this->maxsize=array($this->maxsize);//同上
if (!is_array($this->ftype))$this->ftype=array($this->ftype);//同上
$totaluploadfield=count($this->uploadfield);
for ($i=0;$i $uploadfile=$_FILES[$this->uploadfield[$i]]['tmp_name'];
$file_name=$_FILES[$this->uploadfield[$i]]['name'];
$file_old=$_POST[$this->uploadfield[$i].'_old'];//用在更新中,表示上传文件所对应的原有文件
$file_del=$_POST[$this->uploadfield[$i].'_del'];//原有文件是否标记为删除
if ($uploadfile!=""&&$file_name!=""){
//表示需要上传,即文件域里填入了任何字符
$uploadfield[]=$this->uploadfield[$i];
//取得新的上传字段,因为文件域中没有填入任何字符的不用上传
$maxsize[]=(!empty($this->maxsize[$i]))?$this->maxsize[$i]:$this->maxsize[0];
//取得相对应的大小限制值
$ftype[]=(!empty($this->ftype[$i]))?$this->ftype[$i]:$this->ftype[0];
//取得相对应的类型限制值
$newfile=$this->uploadpath."/".$file_name;
//上传后的文件地址
$insertname=$file_name;
//修改sql语言时要用到,将mysql表中对应字段的值改为目前上传文件名
if ($file_old!="")$oldfile[]=$this->uploadpath."/".sprintf('%s',$file_old);
//用在更新中,取得原有文件地址,当新文件上传后删除旧文件
}
else if ($file_old!=""){
//表示不需要上传,即文件域里没有填入任何字符,但是有旧文件
if ($file_del=="true"){
//如果旧文件标记为删除
$insertname="";
//修改sql语言时要用到,将mysql表中对应字段的值改为空
$oldfile[]=$this->uploadpath."/".sprintf('%s',$file_old);
}
else $insertname=sprintf('%s',$file_old);
//既不用上传也不用删除,修改sql语言时要用到,将mysql表中对应字段的值改为原文件名
}
else $insertname="";
//既不用上传也没有原文件,修改sql语言时要用到,将mysql表中对应字段的值改为空
$this->sql=str_replace($this->uploadfield[$i]."_name", $insertname, $this->sql);
//修改sql语句
}
$this->uploadfield=$uploadfield;
$this->maxsize=$maxsize;
$this->ftype=$ftype;
if (count($uploadfield)>0){
if (!$this->test($oldfile))return false;
}
//测试能否全部上传
if (count($oldfile)>0)$this->err_del((count($oldfile)-1),$oldfile);
//通过测试后删除标记为删除的原文件
$db=new Lwgdb();//数据库连接与查询类
if (count($uploadfield)==0){
if(!$db->query($this->sql)){
return $this->output("错误:NO1,提交失败,请重试。");
//NO1表示没有上传文件,且sql语句执行失败
}
else $this->debugstr.="sql语句:'".$this->sql."'执行成功
";
}
else {
if ($this->upload()){
if(!$db->query($this->sql)){
$this->err_del(count($uploadfield)-1,$this->newfile);
//删除上传了的文件
return $this->output("错误:NO2,提交失败,请重试。");
//NO1表示上传文件后,sql语句执行失败
}
else $this->debugstr.="sql语句:'".$this->sql."'执行成功
";
}
}
if (!empty($this->url))header("location:".$this->url);
}
}
/*
--------使用方法------------------------------------------------
$uploadname=array("image1","image2");
$sql=sprintf("update test1 set name='%s', image1='%s', image2='%s' where id='%d'",$_POST['name'],$uploadname[0].'_name',$uploadname[1].'_name',$id);
$obj=new Lwguploadandquery($sql,$uploadname,'','Upload',array(40960,2048),array('jpg,gif','all'));
$obj->run();
或:
$obj=new Lwguploadandquery($sql,$uploadname,'','Upload',array(40960,2048),array('jpg,gif','all'));
$obj->uploadname=array("image1","image2");
$obj->sql=sprintf("update test1 set name='%s', image1='%s', image2='%s' where id='%d'",$_POST['name'],$uploadname[0].'_name',$uploadname[1].'_name',$id);
$obj->url="http://xxxxxx.com";
$obj->uploadpath="upload/image";
$obj->maxsize=1024*5;
$obj->ftype='swf';
$obj->run();
----------------------------------------------------------------
*/
?>
--------------------------------------------------------------------------------
/*
------------------------------------------------------------------------------------
类名:Lwgupload
说明:多文件上传类
作者:龙卫国
网络user:lwg888
邮箱:lwg888@163.com
使用、修改、传播请保留作者信息
------------------------------------------------------------------------------------
*/
class Lwgupload{
//-------------可以设置值的变量------------------------
var $uploadfield;//上传文件的字段名
var $maxsize;//限制上传文件的大小
var $file_old;//需要删除的旧文件
var $uploadpath;//文件的上传路径
var $ftype;//限制上传文件的类型
var $debug=true;//是否显示调试或错误信息
//------------用来获取值的变量---------------------------
var $uploadfile;//上传后的临时文件
var $file_name;//文件名
var $file_size;//文件的大小
var $file_size_format;//格式化后的$file_size
var $file_type;//文件类型
var $debugstr="";//记录调试信息
var $err="";//记录错误信息
//构造函数
//$uploadfield 上传文件的字段名,上传多个文件时可以是数组
//$uploadpath 文件的上传路径,不能为数组
//$maxsize 限制上传文件的大小,上传多个文件时可以是数组,为不同的文件限制不同大小
//$ftype 限制上传文件的类型,上传多个文件时可以是数组,为不同的文件限制不同类型
//$ftype 为‘all’时为不限制类型
//使用时可以将$ftype的值设为array('jpg,gif,png','swf','all')表示为三个上传文件限制类型。第一个文件必须是jpg或gif或png,第二个必须是swf,第三个为任意类型
function Lwgupload($uploadfield="",$uploadpath="",$maxsize="",$ftype="all"){
$this->uploadfield=$uploadfield;
$this->uploadpath=$uploadpath;
$this->maxsize=$maxsize;
$this->ftype=$ftype;
}
//test()用来测试能否全部上传,否则一个也不要上传
//$oldfile表示要删除的文件,用在更新中,删除旧的上传新的
function test($oldfile=''){
if ($this->uploadfield=="")return;
if (empty($this->uploadpath))$this->uploadpath=dirname($_SERVER['PATH_TRANSLATED'])."/Upload";
if (empty($this->maxsize))$this->maxsize=1048576;
if (!is_array($this->uploadfield))$this->uploadfield=array($this->uploadfield);
//如果不为数组改为数组,便于后面代码的简化
$total_upload=count($this->uploadfield);//获得总字段数
if (!is_array($this->maxsize))$this->maxsize=array($this->maxsize);//如果不为数组改为数组,便于后面代码的简化
if (!is_array($this->ftype))$this->ftype=array($this->ftype);//同上
//如果没有相应路径则建立之
if (!file_exists($this->uploadpath)){
if (!mkdir($this->uploadpath,0700))return output("错误!请手动建立有效路径。");
}
include_once(dirname(__FILE__)."/Lwgfiletype.inc.php");
//该文件包含了数组变量$filetype,记录大多数文件类型对应的扩展名
Set_time_limit(60);//设置超时为60秒
$needupload=array();//经测试可以上传的文件
for ($i=0;$i $this->uploadfile[$i]=$_FILES[$this->uploadfield[$i]]['tmp_name']; //临时文件
$this->file_name[$i]=$_FILES[$this->uploadfield[$i]]['name']; //文件名
$this->file_type[$i]=$_FILES[$this->uploadfield[$i]]['type']; //类型
$this->file_lname[$i]=strtolower(substr( strrchr($this->file_name[$i], "." ), 1 )); //扩展名
$this->file_size[$i]=$_FILES[$this->uploadfield[$i]]['size']; //大小
$this->file_old[$i]=$_POST[$this->uploadfield[$i].'_old']; //需要删除的文件
$this->newfile[$i]=$this->uploadpath."/".$this->file_name[$i];//上传后的地址
$maxsize=(!empty($this->maxsize[$i]) && $this->maxsize[$i]>0)?$this->maxsize[$i]:$this->maxsize[0];
$maxsize_value=$this->format_maxsize($maxsize);//将$maxsize格式化
$thetype=(!empty($this->ftype[$i]))?$this->ftype[$i]:$this->ftype[0];
$ftype=array();
$lname=array();
if ($thetype!="all"){
$tmp_type=explode(",",$thetype);
for ($n=0;$n
if (!empty($tmp_t)){
$s_tmp=strtolower($tmp_t);
$ftype[]=$filetype[$s_tmp];
$lname[]=$s_tmp;
}
}
}
//分析限制当前类型的参数
if (($this->file_size[$i]==0)||($this->uploadfile[$i]=="")){
return $this->output($this->uploadfield[$i]."上传了无效文件或0字节文件。");
}
if ($thetype!="all" && !in_array($this->file_type[$i],$ftype) && !in_array($this->file_lname[$i],$lname)){
return $this->output("对不起!上传文件格式只能是'".$thetype."'。");
}
if ($this->file_size[$i] > $maxsize){
return $this->output("对不起!文件'".$this->file_name[$i]."'大于'".$maxsize_Value."',上传失败。\n请减小文件到".$maxsize_Value."之内,然后再试。");
}
if (file_exists($this->newfile[$i])){
if ($oldfile=="" || ($oldfile!="" && !in_array($this->newfile[$i],$oldfile)))return $this->output("对不起!文件'".$this->file_name[$i]."'已经存在,上传失败。请更改文件名,然后再试。");
//$oldfile表示要删除的文件,虽然要上传的文件存在,但它将要被删除,因此还是可以上传
}
if (in_array($this->file_name[$i],$needupload)){
//如果两个以上的上传字段上传相同的文件是不允许的
return $this->output("对不起!文件'".$this->file_name[$i]."'重复,上传失败。请更改文件名,然后再试。");
}
$needupload[]=$this->file_name[$i];
}
Set_time_limit(30);//设置超时为30秒
return true;
}
//测试过关后可以上传
function upload(){
if ($this->uploadfield=="")return false;
$total_upload=count($this->uploadfield);
for ($i=0;$i $this->file_size_format[$i]=$this->format_maxsize($this->file_size[$i]);
if (@move_uploaded_file($this->uploadfile[$i],$this->newfile[$i]))
$this->debugstr.="文件'".$this->file_name[$i]."'(".$this->file_size_format[$i].")上传成功。
";
else {
if ($i>0)$this->err_del(($i-1),$this->newfile);
//如果有一个上传失败,则删除所有已上传的文件
return $this->output("对不起!文件'".$this->file_name[$i]."'上传失败。请重试。");
}
}
return true;
}
//格式化文件大小数字
function format_maxsize($value){
if ($value elseif ($value else $maxsize_Value = number_format((double)($value/(1024*1024)),2)."mb";
return $maxsize_Value;
}
//出错后删除已上传的文件
function err_del($i,$thefile){
while ($i>=0){
if (@unlink($thefile[$i])!=false)$this->debugstr.="文件'".$thefile[$i]."'删除成功
";
$i--;
}
}
//记录和输出错误信息
function output($msg){
if ($msg!="")$this->err=$msg;
if ($this->debug)echo "";
return false;
}
}
/*
----------------使用方法-----------------------------------------------
$obj=Lwgupload("image1","",1024*2,"all");
if ($obj->test())$obj->upload();
-------------------------------------------------------------------------
*/
?>

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