二款php ajax文件上传代码-php教程

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 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" onchange="alert(document.getelementbyid('fileadd').value);">
<input type="submit" value="上传" onclick="uploade(document.getelementbyid('fileadd').value);">
<div ></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 action="file.php">
<table width="63%" 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%" >添加文件：</td>
<td><a href="javascript：void(0);" class="files" ></a> <img src="img/loading.gif" /></td>
</tr>
<tr>
<td colspan="2"><table cellspacing="0">
<thead>
<tr>
<td>文件路径</td>
<td width="100"></td>
</tr>
</thead>
<tbody >
</tbody>
</table></td>
</tr>
<tr>
<td colspan="2" ><label for="textfield"></label>
<input type="text" name="uploadsfile" /></td>
</tr>
<tr>
<td colspan="2" >温馨提示：最多可同时上传 <b ></b> 个文件，只允许上传 <b ></b> 文件。 </td>
</tr>
<tr>
<td colspan="2" align="center" ><input type="button" value="开始上传" disabled="disabled" />
   
<input type="button" value="全部取消" 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phpfensi.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>

二款php ajax文件上传代码

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