二款php ajax文件上传代码

2024-09-04 11:45:04

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这两款ajax文件上传代码其实都是利用了js的iframe或ajax post来实现的下面来看看代码吧,代码如下:

<html>

<body>

<h1>ajax file upload sample</h1><br/><input id="uplaod" name="btn_send" type="button" value="上传测试"/>

<div id=result></div>

<pre class=js name="code">

<script language="javascript">

// 上传函数

function btn_send.onclick() {

data = ""

spliter = "-------7d8d733180846"

datadatadata = data + spliter + " "

datadatadata = data + "content-disposition: form-data; name="photofile"; filename="c:/a.txt" "

// datadatadata = data + "content-type: image/pjpeg" + vbcrlf

datadatadata = data + "content-type: text/plain" + " " + " "

text = "my name is wilson lin."

postlength = text.length + data.length + 2 + spliter.length + 4

package = data + text + " " + spliter + "-- "

alert(package)

// 把xml文档发送到web服务器

var xmlhttp = new activexobject("microsoft.xmlhttp");

xmlhttp.open("post","./upload.php",false);

xmlhttp.setrequestheader("content-type", "multipart/form-data; boundary=-----7d8d733180846");

xmlhttp.setrequestheader("content-length", postlength);

xmlhttp.send(package);

// 显示服务器返回的信息

result.innerhtml=xmlhttp.responsetext;

}

</script>

</pre>

</body>

</html>

<html>

<script language="javascript">



</script>

<body>

<input type=file name="mefile" id="fileadd" onchange="alert(document.getelementbyid('fileadd').value);">

<input type="submit" value="上传" onclick="uploade(document.getelementbyid('fileadd').value);">

<div id="content"></div>

</body>

</html>

upload.php文件,代码如下:

<?php

// $_files['photofile']:是获得上传图片的数组

// $uploadfile：存放地址

$uploadfile = "./".$_files['photofile']['name'];

copy( $_files['photofile']['tmp_name'], $uploadfile );

echo "url: <a href='http://localhost/".$_files['photofile']['name']."' target='_blank'>".$_files['photofile']['name']."</a><br/>";

?>

upload successed!

实例代码二,代码如下:

<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="content-type" content="text/html; charset=gb2312" />

<title>无刷新文件上传系统</title>

</head>

<body>

<style>

.fu_list {

width:600px;

background:#ebebeb;

font-size:12px;

}

.fu_list td {

padding:5px;

line-height:20px;

background-color:#fff;

}

.fu_list table {

width:100%;

border:1px solid #ebebeb;

}

.fu_list thead td {

background-color:#f4f4f4;

}

.fu_list b {

font-size:14px;

}

/*file容器样式*/

a.files {

width:90px;

height:30px;

overflow:hidden;

display:block;

border:1px solid #bebebe;

background:url(img/fu_btn.gif) left top no-repeat;

text-decoration:none;

}

a.files:hover {

background-color:#ffffee;

background-position:0 -30px;

}

/*file设为透明，并覆盖整个触发面*/

a.files input {

margin-left:-350px;

font-size:30px;

cursor:pointer;

filter:alpha(opacity=0);

opacity:0;

}

/*取消点击时的虚线框*/

a.files, a.files input {

outline:none;/*ff*/

hide-focus:expression(this.hidefocus=true);/*ie*/

}

</style>

<form id="uploadform" action="file.php">

  <table width="63%" border="0" cellspacing="1" class="fu_list">

    <thead>

      <tr>

        <td colspan="2"><b>上传文件</b></td>

      </tr>

    </thead>

    <tbody>

      <tr>

        <td align="right" width="15%" style="line-height:35px;">添加文件：</td>

        <td><a href="javascript：void(0);" class="files" id="idfile"></a> <img id="idprocess" style="display:none;" src="img/loading.gif" /></td>

      </tr>

      <tr>

        <td colspan="2"><table border="0" cellspacing="0">

            <thead>

              <tr>

                <td>文件路径</td>

                <td width="100"></td>

              </tr>

            </thead>

            <tbody id="idfilelist">

            </tbody>

          </table></td>

      </tr>

      <tr>

        <td colspan="2" style="color:gray"><label for="textfield"></label>

        <input type="text" name="uploadsfile" id="uploadsfile" /></td>

      </tr>

      <tr>

        <td colspan="2" style="color:gray">温馨提示：最多可同时上传 <b id="idlimit"></b> 个文件，只允许上传 <b id="idext"></b> 文件。 </td>

      </tr>

      <tr>

        <td colspan="2" align="center" id="idmsg"><input type="button" value="开始上传" id="idbtnupload" disabled="disabled" />

             

          <input type="button" value="全部取消" id="idbtndel" disabled="disabled" />

        </td>

      </tr>

    </tbody>

  </table>

</form>

<script type="text/javascript">

var isie = (document.all) ? true : false;

var $ = function (id) {

    return "string" == typeof id ? document.getelementbyid(id) : id;

};

var class = {

  create: function() {

    return function() {

      this.initialize.apply(this, arguments);

    }

  }

}

var extend = function(destination, source) {

for (var property in source) {

  destination[property] = source[property];

}

}

var bind = function(object, fun) {

return function() {

  return fun.apply(object, arguments);

}

}

var each = function(list, fun){

for (var i = 0, len = list.length; i < len; i++) { fun(list[i], i); }

};

//文件上传类

var fileupload = class.create();

fileupload.prototype = {

  //表单对象，文件控件存放空间

  initialize: function(form, folder, options) {

this.form = $(form);//表单

this.folder = $(folder);//文件控件存放空间

this.files = [];//文件集合

this.setoptions(options);

this.filename = this.options.filename;

this._framename = this.options.framename;

this.limit = this.options.limit;

this.distinct = !!this.options.distinct;

this.extin = this.options.extin;

this.extout = this.options.extout;

this.oninifile = this.options.oninifile;

this.onempty = this.options.onempty;

this.onnotextin = this.options.onnotextin;

this.onextout = this.options.onextout;

this.onlimite = this.options.onlimite;

this.onsame = this.options.onsame;

this.onfail = this.options.onfail;

this.onini = this.options.onini;

if(!this._framename){

  //为每个实例创建不同的iframe

  this._framename = "uploadframe_" + math.floor(math.random() * 1000);

  //ie不能修改iframe的name

  var oframe = isie ? document.createelement("<iframe name="" + this._framename + "">") : document.createelement("iframe");

  //为ff设置name

  oframe.name = this._framename;

  oframe.style.display = "none";

  //在ie文档未加载完用appendchild会报错

  document.body.insertbefore(oframe, document.body.childnodes[0]);

}//开源代码Vevb.com

//设置form属性，关键是target要指向iframe

this.form.target = this._framename;

this.form.method = "post";

//注意ie的form没有enctype属性，要用encoding

this.form.encoding = "multipart/form-data";

//整理一次

this.ini();

  },

  //设置默认属性

  setoptions: function(options) {

    this.options = {//默认值

  filename: "files[]",//文件上传控件的name，配合后台使用

  framename: "",//iframe的name，要自定义iframe的话这里设置name

  oninifile: function(){},//整理文件时执行(其中参数是file对象)

  onempty: function(){},//文件空值时执行

  limit:  10,//文件数限制，0为不限制

  onlimite: function(){},//超过文件数限制时执行

  distinct: true,//是否不允许相同文件

  onsame:  function(){},//有相同文件时执行

  extin:  ["gif","jpg","rar","zip","iso","swf","exe"],//允许后缀名

  onnotextin: function(){},//不是允许后缀名时执行

  extout:  [],//禁止后缀名，当设置了extin则extout无效

  onextout: function(){},//是禁止后缀名时执行

  onfail:  function(){},//文件不通过检测时执行(其中参数是file对象)

  onini:  function(){}//重置时执行

    };

    extend(this.options, options || {});

  },

  //整理空间

  ini: function() {

//整理文件集合

this.files = [];

//整理文件空间，把有值的file放入文件集合

each(this.folder.getelementsbytagname("input"), bind(this, function(o){

  if(o.type == "file"){ o.value && this.files.push(o); this.oninifile(o); }

}))

//插入一个新的file

var file = document.createelement("input");

file.name = this.filename; file.type = "file"; file.onchange = bind(this, function(){ this.check(file); this.ini(); });

this.folder.appendchild(file);

//执行附加程序

this.onini();

  },

  //检测file对象

  check: function(file) {

//检测变量

var bcheck = true;

//空值、文件数限制、后缀名、相同文件检测

if(!file.value){

  bcheck = false; this.onempty();

} else if(this.limit && this.files.length >= this.limit){

  bcheck = false; this.onlimite();

} else if(!!this.extin.length && !regexp(".(" + this.extin.join("|") + ")$", "i").test(file.value)){

  //检测是否允许后缀名

  bcheck = false; this.onnotextin();

} else if(!!this.extout.length && regexp(".(" + this.extout.join("|") + ")$", "i").test(file.value)) {

  //检测是否禁止后缀名

  bcheck = false; this.onextout();

} else if(!!this.distinct) {

  each(this.files, function(o){ if(o.value == file.value){ bcheck = false; } })

  if(!bcheck){ this.onsame(); }

}

//没有通过检测

!bcheck && this.onfail(file);

  },

  //删除指定file

  delete: function(file) {

//移除指定file

this.folder.removechild(file); this.ini();

  },

  //删除全部file

  clear: function() {

//清空文件空间

each(this.files, bind(this, function(o){ this.folder.removechild(o); })); this.ini();

  }

}

var fu = new fileupload("uploadform", "idfile", { extin: ["gif","jpg"],

oninifile: function(file){ file.value ? file.style.display = "none" : this.folder.removechild(file); },

onempty: function(){ alert("请选择一个文件"); },

onlimite: function(){ alert("超过上传限制"); },

onsame: function(){ alert("已经有相同文件"); },

onnotextin: function(){ alert("只允许上传" + this.extin.join("，") + "文件"); },

onfail: function(file){ this.folder.removechild(file); },

onini: function(){

  //显示文件列表

  var arrrows = [];

  if(this.files.length){

   var othis = this;

   each(this.files, function(o){

    var a = document.createelement("a"); a.innerhtml = "取消"; a.href = "javascript：void(0);";

    a.onclick = function(){ othis.delete(o); return false; };

    arrrows.push([o.value, a]);

   });

  } else { arrrows.push(["<font color='gray'>没有添加文件</font>", " "]); }

  addlist(arrrows);

  //设置按钮

  $("idbtnupload").disabled = $("idbtndel").disabled = this.files.length <= 0;

}

});

$("idbtnupload").onclick = function(){

//显示文件列表

var arrrows = [];

each(fu.files, function(o){ arrrows.push([o.value, " "]); });

addlist(arrrows);

fu.folder.style.display = "none";

$("idprocess").style.display = "";

$("idmsg").innerhtml = "正在添加文件到您的网盘中，请稍候……<br />有可能因为网络问题，出现程序长时间无响应，请点击"<a href='?'><font color='red'>取消</font></a>"重新上传文件";

fu.form.submit();

}

//用来添加文件列表的函数

function addlist(rows){

//根据数组来添加列表

var filelist = $("idfilelist"), ofragment = document.createdocumentfragment();

//用文档碎片保存列表

each(rows, function(cells){

  var row = document.createelement("tr");

  each(cells, function(o){

   var cell = document.createelement("td");

   if(typeof o == "string"){ cell.innerhtml = o; }else{ cell.appendchild(o); }

   row.appendchild(cell);

  });

  ofragment.appendchild(row);

})

//ie的table不支持innerhtml所以这样清空table

while(filelist.haschildnodes()){ filelist.removechild(filelist.firstchild); }

filelist.appendchild(ofragment);

}

$("idlimit").innerhtml = fu.limit;

$("idext").innerhtml = fu.extin.join("，");

$("idbtndel").onclick = function(){ fu.clear(); }

//在后台通过window.parent来访问主页面的函数

function finish(msg)

{

$('uploadsfile').value=msg;

}

</script>

</body>

</html>

php接ajax上传代码,代码如下:

<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="content-type" content="text/html; charset=gb2312" />

<title>无标题文档</title>

</head>

<body>

<?

$sort=12;

$f_type=strtolower("swf,jpg,rar,zip,7z,iso,gif");//设置可上传的文件类型

$file_size_max=200*1024*1024;//限制单个文件上传最大容量

$overwrite = 0;//是否允许覆盖相同文件,1:允许,0:不允许

$f_input="files";//设置上传域名称

    foreach($_files[$f_input]["error"] as $key => $error){

        $up_error="no";

        if ($error == upload_err_ok){

            $f_name=$_files[$f_input]['name'][$key];//获取上传源文件名



            $uploadfile=$uploaddir.strtolower(basename($f_name));



            $tmp_type=substr(strrchr($f_name,"."),1);//获取文件扩展名

   $tmp_type=strtolower($tmp_type);

            if(!stristr($f_type,$tmp_type)){

                echo "<script>alert('对不起,不能上传".$tmp_type."格式文件, ".$f_name." 文件上传失败!')</script>";

                $up_error="yes";

            }



            if ($_files[$f_input]['size'][$key]>$file_size_max) {



                echo "<script>alert('对不起,你上传的文件 ".$f_name." 容量为".round($_files[$f_input]

['size'][$key]/1024)."kb,大于规定的".($file_size_max/1024)."kb,上传失败!')</script>";

                $up_error="yes";

            }



            if (file_exists($uploadfile)&&!$overwrite){

                echo "<script>alert('对不起,文件 ".$f_name." 已经存在,上传失败!')</script>";

                $up_error="yes";

            }

             $string = 'abcdefghijklmnopgrstuvwxyz0123456789';

$rand = '';

for ($x=0;$x<12;$x++)

  $rand .= substr($string,mt_rand(0,strlen($string)-1),1);

$t=date("ymdhis").substr($gettime[0],2,6).$rand;

$attdir="./file/";

    if(!is_dir($attdir))

    {  mkdir($attdir);}

            $uploadfile=$attdir.$t.".".$tmp_type;

            if(($up_error!="yes") and (move_uploaded_file($_files[$f_input]['tmp_name']

[$key], $uploadfile))){



    $_msg=$_msg.$f_name.'上传成功 ';





            }

   else{

   $_msg=$_msg.$f_name.'上传失败 ';

   }

        }

    }

echo "<script>window.parent.finish('".$_msg."');</script>";

?>

</body>

</html>