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html5多图控件<input id="fileImage" type="file" size="30" name="files[]" multiple /> multiple 这个input的特性是html5新有的，所以IE6这么低级的货是无法兼容的。
这个属性相当于以前的这样的多图情况
<input id="fileImage" type="file" size="30" name="files[]" > <input id="fileImage" type="file" size="30" name="files[]" > <input id="fileImage" type="file" size="30" name="files[]" >
不过道理很简单一个是一次只能选择一个图片
HTML5的这个可以选择多个图片
后台代码：
function getimgmany($rr,$upload_image_dir)
{
$fs = $_FILES[$rr];
$imgnames = array();
for($i=0;$i<count($fs[‘name‘]);$i++)
{
//得到扩展名
$pathinfo = pathinfo($_FILES[$rr][‘name‘][$i]);
if($fs[‘size‘]==0)continue;
//检查文件扩展名，看是否是支持的图片格式
$fileextname = "jpg|gif|png|jpeg|bmp";
if($type=="file")
{
$fileextname.="|txt|sql|html|htm|pdf|chm|rar|zip|doc|xls";
}
echo $pathinfo["extension"];
if( !preg_match("/^".$fileextname."$/i", $pathinfo["extension"]) )
{
echo "<div style=‘font-size:12px;color=red;font-weight:bold;‘>不支持的扩展名 <a href=‘javascript:history.back(-1);‘>点击返回</a></div>";
exit();
}
srand ((double) microtime() * 948625);
//生成随机文件名
$targetname =time();
$targetname .= rand() . ‘.‘ . $pathinfo["extension"];
$targetpath = $upload_image_dir .strftime ("%Y%m" ,time())."/". $targetname;
copy($_FILES[$rr][‘tmp_name‘][$i], $targetpath);
unlink($_FILES[$rr][‘tmp_name‘][$i]);
$imga = $targetpath;
array_push($imgnames,$imga);
}
return $imgnames;
}
php代码：
$imgdir = "uploads/"; $imgs = getimgmany(‘files‘,$imgdir); print_r($imgs);
html5 ajax上传图片的代码如下：
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>HTML5上传图片</title>
<style type="text/css">
li{list-style:none}
li img{width:100px}
.tips{color:red}
</style>
</head>
<body>
<p>注意图片太小的话，看不到进度条</p>
<input type="file" id="filesInput" multiple />
<br><br>
<a href="javascript:;" id="btnUpload">开始上传</a>
<p id="info"></p>
<label>读取进度：</label><progress id="Progress" value="0" max="100"></progress>
<span id="percent"></span>
<p id="uploadSpeed"></p>
<ul id="imageBox"></ul>
<script type="text/javascript">
//定义获取对象的方法
function $(id) {
return document.getElementById(id);
}
var filesInput = $("filesInput"),
info = $("info"),
imageBox = $("imageBox"),
btnUpload = $("btnUpload"),
progress = $("Progress"),
percent = $("percent"),
uploadSpeed = $("uploadSpeed");
//定义存放图片对象的数组
var uploadImgArr = [];
//防止图片上传完成后，再点击上传按钮的时候重复上传图片
var isUpload = false;
//定义获取图片信息的函数
function getFiles(e) {
isUpload = false;
e = e || window.event;
//获取file input中的图片信息列表
var files = e.target.files,
//验证是否是图片文件的正则
reg = /image/.*/i;
//console.log(files);
for (var i = 0,f; f = files[i]; i++) {
//把这个if判断去掉后，也能上传别的文件
if (!reg.test(f.type)) {
imageBox.innerHTML += "<li>你选择的" + f.name + "文件不是图片</li>";
//跳出循环
continue;
}
//console.log(f);
uploadImgArr.push(f);
var reader = new FileReader();
reader.onload = (function(file) {
//获取图片相关的信息
var fileSize = (file.size / 1024).toFixed(2) + "K",
fileName = file.name,
fileType = file.type;
//console.log(fileName)
return function(e) {
//console.log(e.target)
//获取图片的宽高
var img = new Image();
img.addEventListener("load", imgLoaded, false);
img.src = e.target.result;
function imgLoaded() {
imgWidth = img.width;
imgHeight = img.height;
//图片加载完成后才能获取imgWidth和imgHeight
imageBox.innerHTML += "<li><img src=‘" + e.target.result + "‘ alt=‘" + fileName + "‘ title=‘" + fileName + "‘> 图片名称是：" + fileName + ";图片的的大小是：" + fileSize + ";图片的类型是：" + fileType + ";图片的尺寸是：" + imgWidth + " X " + imgHeight + "</li>";
}
}
})(f);
//读取文件内容
reader.readAsDataURL(f);
}
//console.log(uploadImgArr);
}
if (window.File && window.FileList && window.FileReader && window.Blob) {
filesInput.addEventListener("change", getFiles, false);
} else {
info.innerHTML = "您的浏览器不支持HTML5长传";
info.className="tips";
}
//开始上传照片
function uploadFun() {
var j = 0;
function fun() {
if (uploadImgArr.length > 0 && !isUpload) {
var singleImg = uploadImgArr[j];
var xhr = new XMLHttpRequest();
if (xhr.upload) {
//进度条(见http://www.css119.com/archives/1476)
xhr.upload.addEventListener("progress",
function(e) {
if (e.lengthComputable) {
progress.value = (e.loaded / e.total) * 100;
percent.innerHTML = Math.round(e.loaded * 100 / e.total) + "%";
//计算网速
var nowDate = new Date().getTime();
var x = (e.loaded) / 1024;
var y = (nowDate - startDate) / 1000;
uploadSpeed.innerHTML = "网速：" +(x / y).toFixed(2) + " K/S";
} else {
percent.innerHTML = "无法计算文件大小";
}
},
false);
// 文件上传成功或是失败
xhr.onreadystatechange = function(e) {
if (xhr.readyState == 4) {
if (xhr.status == 200 && eval("(" + xhr.responseText + ")").status == true) {
info.innerHTML += singleImg.name + "上传完成; ";
//因为progress事件是按一定时间段返回数据的，所以单独progress不可能100%的，在这设置传完后强制设置100%
progress.value = 100;
percent.innerHTML = "100%";
isUpload = true;
} else {
info.innerHTML += singleImg.name + "上传失败; ";
}
//上传成功（或者失败）一张后，再次调用fun函数，模拟循环
if (j < uploadImgArr.length - 1) {
j++;
isUpload = false;
fun();
}
}
};
var formdata = new FormData();
formdata.append("FileData", singleImg);
// 开始上传
xhr.open("POST", "upload.php", true);
xhr.send(formdata);
var startDate = new Date().getTime();
}
}
}
fun();
}
btnUpload.addEventListener("click", uploadFun, false);
</script>
</body>
</html>
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原文地址：http://www.cnblogs.com/axl234/p/4615982.html
