How to handle multiple file upload using PHP - php

Question

I want to upload files using PHP but the problem is that I don't know how many files I will upload.
My question is how can I upload files if I use file[]?
<form action="upload.php" method="post" enctype="multipart/form-data">
<label for="file">Filename:</label><input type="file" name="file[]" id="file" />
<br />
<label for="file">Filename:</label><input type="file" name="file[]" id="file" />
<br />
<input type="submit" name="submit" value="Submit" />
</form>
I will add just File box and I will use JavaScript to create more file input to upload but how to handle them in PHP?

Answer 1

See: $_FILES, Handling file uploads
<?php
if(isset($_FILES['file']['tmp_name']))
{
// Number of uploaded files
$num_files = count($_FILES['file']['tmp_name']);
/** loop through the array of files ***/
for($i=0; $i < $num_files;$i++)
{
// check if there is a file in the array
if(!is_uploaded_file($_FILES['file']['tmp_name'][$i]))
{
$messages[] = 'No file uploaded';
}
else
{
// copy the file to the specified dir
if(#copy($_FILES['file']['tmp_name'][$i],$upload_dir.'/'.$_FILES['file']['name'][$i]))
{
/*** give praise and thanks to the php gods ***/
$messages[] = $_FILES['file']['name'][$i].' uploaded';
}
else
{
/*** an error message ***/
$messages[] = 'Uploading '.$_FILES['file']['name'][$i].' Failed';
}
}
}
}
?>

Answer 2

This is a preferred method of mine. It includes a mysql insert to keep a table on the images uploaded. It also moves the image to the admin image folder and copies the image to the user sites image folder.
<?php
if(isset($_FILES['image']['tmp_name']))
{
$num_files = count($_FILES['image']['tmp_name']);
for($x =0; $x< $num_files;$x++){
$image = $_FILES['image']['name'][$x];
if(!is_uploaded_file($_FILES['image']['tmp_name'][$x]))
{
$messages[] = $image.' No file uploaded."<br>"';
}
if (move_uploaded_file($_FILES["image"]["tmp_name"][$x],"images/". $image)){
$messages[] = $image .' uploaded';
}
copy("images/".$image, '../images/'.$image);
mysql_query("INSERT INTO $table_name VALUES ('NULL','$id','images/$image')");
}
}
?>
<?php /*insert this into the form*/
$count= count($messages); for ($i =0; $i < $count; $i++){echo $messages[$i]."<br>";}
?>

Answer 3

Try this:
if(isset($_FILES['image_file'])) {
$file = $_FILES['image_file'];
for($i = 0; $i < count($file['name']); $i++){
$image = array(
'name' => $file['name'][$i],
'type' => $file['type'][$i],
'size' => $file['size'][$i],
'tmp_name' => $file['tmp_name'][$i],
'error' => $file['error'][$i]
);
// Here is your code to handle one file
}
In your code, just use '$image' instead of '$_FILES' ...

Answer 4

Ajax js
(function(){
var d = document, w = window;
/**
* Get element by id
*/
function get(element){
if (typeof element == "string")
element = d.getElementById(element);
return element;
}
/**
* Attaches event to a dom element
*/
function addEvent(el, type, fn){
if (w.addEventListener){
el.addEventListener(type, fn, false);
} else if (w.attachEvent){
var f = function(){
fn.call(el, w.event);
};
el.attachEvent('on' + type, f)
}
}
/**
* Creates and returns element from html chunk
*/
var toElement = function(){
var div = d.createElement('div');
return function(html){
div.innerHTML = html;
var el = div.childNodes[0];
div.removeChild(el);
return el;
}
}();
function hasClass(ele,cls){
return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)'));
}
function addClass(ele,cls) {
if (!hasClass(ele,cls)) ele.className += " "+cls;
}
function removeClass(ele,cls) {
var reg = new RegExp('(\\s|^)'+cls+'(\\s|$)');
ele.className=ele.className.replace(reg,' ');
}
if (document.documentElement["getBoundingClientRect"]){
var getOffset = function(el){
var box = el.getBoundingClientRect(),
doc = el.ownerDocument,
body = doc.body,
docElem = doc.documentElement,
// for ie
clientTop = docElem.clientTop || body.clientTop || 0,
clientLeft = docElem.clientLeft || body.clientLeft || 0,
// In Internet Explorer 7 getBoundingClientRect property is treated as physical,
// while others are logical. Make all logical, like in IE8.
zoom = 1;
if (body.getBoundingClientRect) {
var bound = body.getBoundingClientRect();
zoom = (bound.right - bound.left)/body.clientWidth;
}
if (zoom > 1){
clientTop = 0;
clientLeft = 0;
}
var top = box.top/zoom + (window.pageYOffset || docElem && docElem.scrollTop/zoom || body.scrollTop/zoom) - clientTop,
left = box.left/zoom + (window.pageXOffset|| docElem && docElem.scrollLeft/zoom || body.scrollLeft/zoom) - clientLeft;
return {
top: top,
left: left
};
}
} else {
// Get offset adding all offsets
var getOffset = function(el){
if (w.jQuery){
return jQuery(el).offset();
}
var top = 0, left = 0;
do {
top += el.offsetTop || 0;
left += el.offsetLeft || 0;
}
while (el = el.offsetParent);
return {
left: left,
top: top
};
}
}
function getBox(el){
var left, right, top, bottom;
var offset = getOffset(el);
left = offset.left;
top = offset.top;
right = left + el.offsetWidth;
bottom = top + el.offsetHeight;
return {
left: left,
right: right,
top: top,
bottom: bottom
};
}
/**
* Crossbrowser mouse coordinates
*/
function getMouseCoords(e){
if (!e.pageX && e.clientX){
// In Internet Explorer 7 some properties (mouse coordinates) are treated as physical,
// while others are logical (offset).
var zoom = 1;
var body = document.body;
if (body.getBoundingClientRect) {
var bound = body.getBoundingClientRect();
zoom = (bound.right - bound.left)/body.clientWidth;
}
return {
x: e.clientX / zoom + d.body.scrollLeft + d.documentElement.scrollLeft,
y: e.clientY / zoom + d.body.scrollTop + d.documentElement.scrollTop
};
}
return {
x: e.pageX,
y: e.pageY
};
}
/**
* Function generates unique id
*/
var getUID = function(){
var id = 0;
return function(){
return 'ValumsAjaxUpload' + id++;
}
}();
function fileFromPath(file){
return file.replace(/.*(\/|\\)/, "");
}
function getExt(file){
return (/[.]/.exec(file)) ? /[^.]+$/.exec(file.toLowerCase()) : '';
}
// Please use AjaxUpload , Ajax_upload will be removed in the next version
Ajax_upload = AjaxUpload = function(button, options){
if (button.jquery){
// jquery object was passed
button = button[0];
} else if (typeof button == "string" && /^#.*/.test(button)){
button = button.slice(1);
}
button = get(button);
this._input = null;
this._button = button;
this._disabled = false;
this._submitting = false;
// Variable changes to true if the button was clicked
// 3 seconds ago (requred to fix Safari on Mac error)
this._justClicked = false;
this._parentDialog = d.body;
if (window.jQuery && jQuery.ui && jQuery.ui.dialog){
var parentDialog = jQuery(this._button).parents('.ui-dialog');
if (parentDialog.length){
this._parentDialog = parentDialog[0];
}
}
this._settings = {
// Location of the server-side upload script
action: 'upload.php',
// File upload name
name: 'userfile',
// Additional data to send
data: {},
// Submit file as soon as it's selected
autoSubmit: true,
// The type of data that you're expecting back from the server.
// Html and xml are detected automatically.
// Only useful when you are using json data as a response.
// Set to "json" in that case.
responseType: false,
// When user selects a file, useful with autoSubmit disabled
onChange: function(file, extension){},
// Callback to fire before file is uploaded
// You can return false to cancel upload
onSubmit: function(file, extension){},
// Fired when file upload is completed
// WARNING! DO NOT USE "FALSE" STRING AS A RESPONSE!
onComplete: function(file, response) {}
};
// Merge the users options with our defaults
for (var i in options) {
this._settings[i] = options[i];
}
this._createInput();
this._rerouteClicks();
}
// assigning methods to our class
AjaxUpload.prototype = {
setData : function(data){
this._settings.data = data;
},
disable : function(){
this._disabled = true;
},
enable : function(){
this._disabled = false;
},
// removes ajaxupload
destroy : function(){
if(this._input){
if(this._input.parentNode){
this._input.parentNode.removeChild(this._input);
}
this._input = null;
}
},
/**
* Creates invisible file input above the button
*/
_createInput : function(){
var self = this;
var input = d.createElement("input");
input.setAttribute('type', 'file');
input.setAttribute('name', this._settings.name);
var styles = {
'position' : 'absolute'
,'margin': '-5px 0 0 -175px'
,'padding': 0
,'width': '220px'
,'height': '30px'
,'fontSize': '14px'
,'opacity': 0
,'cursor': 'pointer'
,'display' : 'none'
,'zIndex' : 2147483583 //Max zIndex supported by Opera 9.0-9.2x
// Strange, I expected 2147483647
};
for (var i in styles){
input.style[i] = styles[i];
}
// Make sure that element opacity exists
// (IE uses filter instead)
if ( ! (input.style.opacity === "0")){
input.style.filter = "alpha(opacity=0)";
}
this._parentDialog.appendChild(input);
addEvent(input, 'change', function(){
// get filename from input
var file = fileFromPath(this.value);
if(self._settings.onChange.call(self, file, getExt(file)) == false ){
return;
}
// Submit form when value is changed
if (self._settings.autoSubmit){
self.submit();
}
});
// Fixing problem with Safari
// The problem is that if you leave input before the file select dialog opens
// it does not upload the file.
// As dialog opens slowly (it is a sheet dialog which takes some time to open)
// there is some time while you can leave the button.
// So we should not change display to none immediately
addEvent(input, 'click', function(){
self.justClicked = true;
setTimeout(function(){
// we will wait 3 seconds for dialog to open
self.justClicked = false;
}, 3000);
});
this._input = input;
},
_rerouteClicks : function (){
var self = this;
// IE displays 'access denied' error when using this method
// other browsers just ignore click()
// addEvent(this._button, 'click', function(e){
// self._input.click();
// });
var box, dialogOffset = {top:0, left:0}, over = false;
addEvent(self._button, 'mouseover', function(e){
if (!self._input || over) return;
over = true;
box = getBox(self._button);
if (self._parentDialog != d.body){
dialogOffset = getOffset(self._parentDialog);
}
});
// we can't use mouseout on the button,
// because invisible input is over it
addEvent(document, 'mousemove', function(e){
var input = self._input;
if (!input || !over) return;
if (self._disabled){
removeClass(self._button, 'hover');
input.style.display = 'none';
return;
}
var c = getMouseCoords(e);
if ((c.x >= box.left) && (c.x <= box.right) &&
(c.y >= box.top) && (c.y <= box.bottom)){
input.style.top = c.y - dialogOffset.top + 'px';
input.style.left = c.x - dialogOffset.left + 'px';
input.style.display = 'block';
addClass(self._button, 'hover');
} else {
// mouse left the button
over = false;
if (!self.justClicked){
input.style.display = 'none';
}
removeClass(self._button, 'hover');
}
});
},
/**
* Creates iframe with unique name
*/
_createIframe : function(){
// unique name
// We cannot use getTime, because it sometimes return
// same value in safari :(
var id = getUID();
var iframe = toElement('<iframe src="javascript:false;" name="' + id + '" />');
iframe.id = id;
iframe.style.display = 'none';
d.body.appendChild(iframe);
return iframe;
},
/**
* Upload file without refreshing the page
*/
submit : function(){
var self = this, settings = this._settings;
if (this._input.value === ''){
// there is no file
return;
}
// get filename from input
var file = fileFromPath(this._input.value);
// execute user event
if (! (settings.onSubmit.call(this, file, getExt(file)) == false)) {
// Create new iframe for this submission
var iframe = this._createIframe();
// Do not submit if user function returns false
var form = this._createForm(iframe);
form.appendChild(this._input);
form.submit();
d.body.removeChild(form);
form = null;
this._input = null;
// create new input
this._createInput();
var toDeleteFlag = false;
addEvent(iframe, 'load', function(e){
if (// For Safari
iframe.src == "javascript:'%3Chtml%3E%3C/html%3E';" ||
// For FF, IE
iframe.src == "javascript:'<html></html>';"){
// First time around, do not delete.
if( toDeleteFlag ){
// Fix busy state in FF3
setTimeout( function() {
d.body.removeChild(iframe);
}, 0);
}
return;
}
var doc = iframe.contentDocument ? iframe.contentDocument : frames[iframe.id].document;
// fixing Opera 9.26
if (doc.readyState && doc.readyState != 'complete'){
// Opera fires load event multiple times
// Even when the DOM is not ready yet
// this fix should not affect other browsers
return;
}
// fixing Opera 9.64
if (doc.body && doc.body.innerHTML == "false"){
// In Opera 9.64 event was fired second time
// when body.innerHTML changed from false
// to server response approx. after 1 sec
return;
}
var response;
if (doc.XMLDocument){
// response is a xml document IE property
response = doc.XMLDocument;
} else if (doc.body){
// response is html document or plain text
response = doc.body.innerHTML;
if (settings.responseType && settings.responseType.toLowerCase() == 'json'){
// If the document was sent as 'application/javascript' or
// 'text/javascript', then the browser wraps the text in a <pre>
// tag and performs html encoding on the contents. In this case,
// we need to pull the original text content from the text node's
// nodeValue property to retrieve the unmangled content.
// Note that IE6 only understands text/html
if (doc.body.firstChild && doc.body.firstChild.nodeName.toUpperCase() == 'PRE'){
response = doc.body.firstChild.firstChild.nodeValue;
}
if (response) {
response = window["eval"]("(" + response + ")");
} else {
response = {};
}
}
} else {
// response is a xml document
var response = doc;
}
settings.onComplete.call(self, file, response);
// Reload blank page, so that reloading main page
// does not re-submit the post. Also, remember to
// delete the frame
toDeleteFlag = true;
// Fix IE mixed content issue
iframe.src = "javascript:'<html></html>';";
});
} else {
// clear input to allow user to select same file
// Doesn't work in IE6
// this._input.value = '';
d.body.removeChild(this._input);
this._input = null;
// create new input
this._createInput();
}
},
/**
* Creates form, that will be submitted to iframe
*/
_createForm : function(iframe){
var settings = this._settings;
// method, enctype must be specified here
// because changing this attr on the fly is not allowed in IE 6/7
var form = toElement('<form method="post" enctype="multipart/form-data"></form>');
form.style.display = 'none';
form.action = settings.action;
form.target = iframe.name;
d.body.appendChild(form);
// Create hidden input element for each data key
for (var prop in settings.data){
var el = d.createElement("input");
el.type = 'hidden';
el.name = prop;
el.value = settings.data[prop];
form.appendChild(el);
}
return form;
}
};
})();
jquery code for uploading
$(document).ready(function () {
var btnUpload=$('#browse');
$("#hidauto").css('display','block');
new AjaxUpload(btnUpload, {
action: '<?=site_url('brand/upload_image1/')?>',
name: 'file',
onSubmit: function(file, ext){$("#loadgif1").css("display","block");
if (! (ext && /^(jpg|jpeg|gif|png)$/.test(ext))){
// extension is not allowed
//document.getElementById("loadgif").style.display='block';
$("#loadgif1").css("display","none");
$("#image").css("display","block");
$("#image").html("only jpg,jpeg,png, images are allowed");
return false;
}
},
onComplete: function(file, response){
//alert(response);
if(response=='0'){
$("#primimage1_error").html("This image is too small please upload a bigger one");
$("#loadgif1").css("display","none");
return false;
}
$("#hidauto").css('display','block');
$("#loadgif1").css("display","none");
$("#image").html("");
var r=response;
//document.getElementById("imghid").value=response;
divid=r.replace(new RegExp(".jpg", 'g'),'');
divid=divid.replace(new RegExp(".jpeg", 'g'),'');
divid=divid.replace(new RegExp(".png", 'g'),'');
//alert(divid);
document.getElementById("imghidall").value=document.getElementById("imghidall").value+response+",";
shw='<div style="float: left; height:135px; width:147px;" id='+divid+'><img src="<?php echo base_url();?>uploads/'+response+'" width="125px" height="115px" /><div style="width: 125px;"><input type="radio" name="checkPrimary" title="Set as Primary image" value="'+divid+'" onClick="primaryimg('+"'"+r+"'"+');" style="margin:5px"><img src="<?php echo base_url();?>images/img_delete.png" width="17px" height="17px" title="delete" onClick="delete_image('+"'"+r+"'"+');" width="15px;" height="15px" style="float:right; margin-top:3px;"></div></div>';
// shw='<div style="float: left; height:135px; width:147px;" id='+divid+'><img src="<?php echo base_url();?>uploads/'+response+'" width="125px" height="115px" /><div style="width: 125px;"><input type="checkbox" id="checkPrimary" value="'+divid+'" onClick="primaryimg('+"'"+r+"'"+');" style="margin:5px"><img src="<?php echo base_url();?>images/remove.png" title="delete" onClick="delete_image('+"'"+r+"'"+');" width="15px;" height="15px" style="float:right; margin-top:2px;"></div></div>';
//alert(shw);
$("#hidauto").append( shw );
$("#primimage1_error").html("");
//location.reload();
}
});
});
HTML Code
<div class="r8_prt" style="margin-right: 0px; margin-top: 10px;">
<div class="line1">
<label style="float: left; width: 121px; margin-right:10%;">Upload images : </label><input type="file" name="browse" id="browse" multiple="true" style="float: left;">
<label class="error" for="dwn" id="allimg_error" style="display:block; color: #B94A48;font-size: 11px;font-weight: bold; text-align:center;" ></label>
<label class="error" for="dwn" id="primimage1_error" style="display:block; color: #B94A48;font-size: 11px;font-weight: bold; text-align:center;" ></label>
<label id="loadgif1" style="display:none; width:10px; float:left"><img style="margin-top:-10px" src="<?php echo base_url();?>images/ajax-loader(2).gif"></label>
<div id="image" style="float:left; width:110%; margin-top:20px; color:#F00;">
</div>
<div id="hidauto">
</div>
<input type="hidden" value="" id="imghid" name="imghid">
<input type="hidden" value="" id="imghidall" name="imghidall">
</div>
</div>
Upload function(For Codeigniter)
function upload_image1() {
$ext=$_FILES['file']['name'];
$epld=explode('.',$ext);
$nn= count($epld);$nn-=1;
$photo=date("MdyHis").".".$epld[$nn];
$data = getimagesize($_FILES['file']['tmp_name']);
$width = $data[0];
$height = $data[1]; if($width<250 || $height<250){ echo 0; die(); }
if( move_uploaded_file($_FILES['file']['tmp_name'],"./uploads/".$photo)){
$config['upload_path'] = './uploads/';
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = '15360'; //15MB
$config['max_width'] = '0';//'2000'
$config['max_height'] = '0';//'2000'
$config['min_width'] = '250';//'2000'
$config['min_height'] = '250';//'2000'
$this->load->library('upload', $config);
echo $photo;
} }
Delete Image
function delete_image(name)
{
var answer = confirm ("Do you want to delete this image?")
if (!answer)
{
}
else{
var base_url="<?php echo base_url();?>";
$.ajax
({
type: "POST",
url: base_url+"index.php/brand/delete_image/?imgname="+name,
data:'',
success: function(view)
{
name=name+",";
allname=document.getElementById("imghidall").value;
e=document.getElementById("imghidall").value = allname.replace(new RegExp(name, 'g'),'');
divid=name.replace(new RegExp(".jpg,", 'g'),'');
divid=divid.replace(new RegExp(".jpeg,", 'g'),'');
divid=divid.replace(new RegExp(".png,", 'g'),'');
//alert(divid);
document.getElementById(divid).innerHTML="";
$("#"+divid).css('width','0px');
}
});
}
}
Delete image function
function delete_image(){
$file_name=$_GET['imgname'];
unlink(FCPATH . '/uploads/' . $file_name);
unlink(FCPATH . '/uploads/thumb/' . $file_name);
unlink(FCPATH . '/uploads/watermark/' . $file_name);
}

Answer 5

if (isset($_FILES['file']['tmp_name'])) {
for ($i = 0; $i < count($_FILES['file']['tmp_name']); $i++) {
$tmpFilePath = $_FILES['file']['tmp_name'][$i];
if ($tmpFilePath != "") {
//. time() . $_FILES['file']['name'][$i] becomes the name of the files
$file[$i] = $newFilePath = "upload/myfolder/" . time() . $_FILES['file']['name'][$i];
if (move_uploaded_file($tmpFilePath, $newFilePath)) {
$file[$i] = $newFilePath = "upload/myfolder/" . time() . $_FILES['file']['name'][$i];
}
}
}
}
PUT THIS SIMPLE SCRIPT INTO PHP SCRIPT OR FUNCTION. NB:
$_FILES['file']
because <input type="file" name="file[]" id="file" />