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HTML5 Multi-File Upload example

Source: Internet
Author: User
Tags file upload
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Research for half a day to find HTML5 is actually particularly simple.

Dotou control <input id= "fileimage" type= "file" size= "" name= "files[" multiple
multiple This input feature is HTML5 new, so IE6 is not compatible with such low-level goods.

This property is equivalent to the previous multiple-graph scenario

The code is as follows Copy Code
<input id= "fileimage" type= "file" size= "" Name= "files[" ">
<input id= "fileimage" type= "file" size= "" Name= "files[" ">
<input id= "fileimage" type= "file" size= "" Name= "files[" ">

But the truth is simple. One can only choose one picture at a time

HTML5 This can select multiple pictures, pull the wind ah.

The background code does not change.

The code is as follows Copy Code

function Getimgmany ($RR, $upload _image_dir)
{
$fs = $_files[$RR];
$imgnames = Array ();

For ($i =0 $i <count ($fs [' name ']); $i + +)
{
Get extension

$pathinfo = PathInfo ($_files[$rr] [' name '] [$i]);

if ($fs [' Size ']==0) continue;

Check the file name extension to see if it is a supported picture format
$fileextname = "Jpg|gif|png|jpeg|bmp";
if ($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; ' > Unsupported extension <a href= ' Javascript:history.back (-1); ' > Click return </a></div> ";
Exit ();
}

Srand (Double) microtime () * 948625);

Generate Random file names
$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;
}

Code calls
PHP-Side code

The code is as follows Copy Code

$imgdir = "uploads/";
$imgs = Getimgmany (' Files ', $imgdir);
Print_r ($IMGS);

Let's look at an AJAX example.

HTML5 Ajax upload Image code is as follows:

The code is as follows Copy Code

<! DOCTYPE html>

<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 ">

<TITLE>HTML5 Upload Pictures </title>

<style type= "Text/css" >

Li{list-style:none}

Li img{width:100px}

. tips{color:red}

</style>

<body>

<p> Note that the picture is too small to see the progress bar </p>

<input type= "File" id= "Filesinput" multiple/>

<br><br>

<a href= "javascript:;" id= "Btnupload" > Start uploading </a>

<p id= "Info" ></p>

<label> Read progress: </label><progress id= "Progress" value= "0" max= "></progress>"

<span id= "percent" ></span>

<p id= "Uploadspeed" ></p>

<ul id= "Imagebox" ></ul>

<script type= "Text/javascript" >

Define methods to get objects

function $ (ID) {

return document.getElementById (ID);

}

var filesinput = $ ("Filesinput"),

Info = $ ("info"),

Imagebox = $ ("Imagebox"),

Btnupload = $ ("Btnupload"),

Progress = $ ("Progress"),

Percent = $ ("percent"),

Uploadspeed = $ ("Uploadspeed");

Defines an array that holds picture objects

var uploadimgarr = [];

To prevent the image upload completed, and then click the Upload button to repeat the upload picture

var isupload = false;

Defines a function to get picture information

function GetFiles (e) {

Isupload = false;

E = e | | window.event;

Get a list of picture information in file input

var files = e.target.files,

Verify the regular of the picture file

reg =/image/.*/i;

Console.log (files);

for (var i = 0,f; f = files[i]; i++) {

After you remove this if, you can also upload other files

if (!reg.test (F.type)) {

imagebox.innerhtml = "<li> you selected" + F.name + "file is not a picture </li>";

Jump out of the loop

Continue

}

Console.log (f);

Uploadimgarr.push (f);

var reader = new FileReader ();

Reader.onload = (function (file) {

Get picture-related information

var fileSize = (file.size/1024). toFixed (2) + "K",

FileName = File.name,

FileType = File.type;

Console.log (FileName)

return function (e) {

Console.log (E.target)

Get the width and height of a picture

var img = new Image ();

Img.addeventlistener ("Load", imgloaded, false);

IMG.SRC = E.target.result;

function imgloaded () {

ImgWidth = Img.width;

ImgHeight = Img.height;

The picture is loaded to get imgwidth and ImgHeight

imagebox.innerhtml + + <li> The name of the picture is: "+ FileName +"; The size of the picture is: "+ fileSize +"; The type of picture is: "+ FileType +"; The size of the picture is: "+ imgwidth +" X "+ imgheight +" </l I> ";

}

}

}) (f);

Read File contents

Reader.readasdataurl (f);

}

Console.log (Uploadimgarr);

}

if (window. File && window. FileList && windows. FileReader && windows. Blob) {

Filesinput.addeventlistener ("Change", GetFiles, false);

} else {

info.innerhtml = "Your browser does not support HTML5 long passes";

Info.classname= "Tips";

}
Start uploading photos

function Uploadfun () {

var j = 0;

function Fun () {

if (uploadimgarr.length > 0 &&!isupload) {

var singleimg = uploadimgarr[j];

var xhr = new XMLHttpRequest ();

if (xhr.upload) {

progress bar (see 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) + "%";

Calculate speed

var nowdate = new Date (). GetTime ();

var x = (e.loaded)/1024;

var y = (nowdate-startdate)/1000;

uploadspeed.innerhtml = "Speed:" + (x/y). toFixed (2) + "k/s";

} else {

percent.innerhtml = "Cannot calculate file size";

}

},

FALSE);

File upload success or failure

Xhr.onreadystatechange = function (e) {

if (xhr.readystate = = 4) {

if (Xhr.status = && eval ("+ Xhr.responsetext +")). Status = = True) {

Info.innerhtml + + singleimg.name + "upload complete;";

Because the progress event is to return the data for a certain period of time, so the individual progress cannot be 100%, forcing the setting after this setting is passed 100%

Progress.value = 100;

percent.innerhtml = "100%";

Isupload = true;

} else {

info.innerhtml + = Singleimg.name + "upload failed;";

}

Upload a successful (or failed) one, call the fun function again, simulate the loop

if (J < uploadimgarr.length-1) {

j + +;

Isupload = false;

Fun ();

}

}

};

var formdata = new Formdata ();

Formdata.append ("Filedata", singleimg);

Start uploading

Xhr.open ("POST", "upload.php", true);

Xhr.send (Formdata);

var startdate = new Date (). GetTime ();

}

}

}

Fun ();

}

Btnupload.addeventlistener ("Click", Uploadfun, false);

</script>

</body>

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Related Keywords:
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