Multiple file upload in PHP - rename files - php

Question

I'm a beginner in php and now doing a project in php. I want to upload images(maximum four image files only).I used the following code to upload images.
<script type="text/javascript">
count=1;
function add_file_field()
{
if(count<4)
{
var container=document.getElementById('file_container');
var file_field=document.createElement('input');
file_field.name='images[]';
file_field.type='file';
container.appendChild(file_field);
var br_field=document.createElement('br');
container.appendChild(br_field);
count++;
}
}
</script>
<div id="file_container">
<input name="images[]" type="file" id="file[]" />
<br />
</div>
<br>Add
I used the following code for single file upload.It's working
<?php
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/pjpeg"))
&& ($_FILES["file"]["size"] < 100000))
{
if ($_FILES["file"]["error"] > 0)
{
echo "File Error : " . $_FILES["file"]["error"] . "<br />";
}else {
echo "Upload File Name: " . $_FILES["file"]["name"] . "<br />";
echo "File Type: " . $_FILES["file"]["type"] . "<br />";
echo "File Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";
echo "File Description:: ".$_POST['description']."<br />";
if (file_exists("images/".$_FILES["file"]["name"]))
{
echo "<b>".$_FILES["file"]["name"] . " already exists. </b>";
}else
{
$tmpname=$_FILES["file"]["tmp_name"];
$name=$_FILES["file"]["name"];
$new="jun.jpg";
rename($name,$new);
move_uploaded_file($_FILES["file"]["tmp_name"],"images/".$new);
echo "Stored in: " . "images/" .$new."<br />";
?>
Uploaded File:<br>
<img src="images/<?php echo $new; ?>" alt="Image path Invalid" >
<?php
}
}
}else
{
echo "Invalid file detail ::<br> file type ::".$_FILES["file"]["type"]." , file size::: ".$_FILES["file"]["size"];
}
?>
I need help to modify this code to upload maximum of 4 images.
Can rename function be used to rename a selected file for upload on moving to a specified folder?
but it was showing error
Please do help me

Answer 1

You should allow multiple file selection in your file input, so you do not have to add a new input over and over again:
<input id="file" type="file" name="images[]" multiple>
After submitting the form you can iterate over $_FILES array like that:
foreach($_FILES['images'] as $file) {
//your code here --> replace $_FILES['file'] with $file
}
I hope this helps.

Answer 2

<?php
if(isset($_POST['submit']))
{
$count=count($_FILES["images"]["name"]);
for($i=0;$i<$count;$i++)
{
if ((($_FILES["images"]["type"][$i] == "image/gif")
|| ($_FILES["images"]["type"][$i] == "image/jpeg")
|| ($_FILES["images"]["type"][$i] == "image/pjpeg"))
&& ($_FILES["images"]["size"][$i] < 100000))
{
if ($_FILES["images"]["error"][$i] > 0)
{
echo "File Error : " . $_FILES["images"]["error"][$i] . "<br />";
}
else
{
echo "Upload File Name: " . $_FILES["images"]["name"][$i] . "<br />";
echo "File Type: " . $_FILES["images"]["type"][$i] . "<br />";
echo "File Size: " . ($_FILES["images"]["size"][$i] / 1024) . " Kb<br />";
if (file_exists("public/images/".$_FILES["images"]["name"][$i] ))
{
echo "<b>".$_FILES["images"]["name"][$i] . " already exists. </b>";
}
else
{
move_uploaded_file($_FILES["images"]["tmp_name"][$i] ,"public/images/". $_FILES["images"]["name"][$i] );
echo "Stored in: " . "public/images/" . $_FILES["images"]["name"][$i] ."<br />";
?>
Uploaded File:<br>
<img src="public/images/<?php echo $_FILES["images"]["name"][$i] ; ?>" alt="Image path Invalid" >
<?php
}
}
}else
{
echo "Invalid file detail ::<br> file type ::".$_FILES["images"]["type"][$i] ." , file size::: ".$_FILES["images"]["size"][$i] ;
}
}
}?>
image uploaded using for loop..foreach was showing error

Answer 3

Here is an example of multi-file upload in PHP
https://github.com/hemantrai88/html5-php_multi-file-upload

Answer 4

I have one example which is working, I think this will help you
<form action="" method="POST" enctype="multipart/form-data">
<input type="file" name="files[]" />
<input type="submit"/>
</form>
In php
if(isset($_FILES['files'])){
$errors= array();
foreach($_FILES['files']['tmp_name'] as $key => $tmp_name ){
$file_name = $key.$_FILES['files']['name'][$key];
$file_size =$_FILES['files']['size'][$key];
$file_tmp =$_FILES['files']['tmp_name'][$key];
$file_type=$_FILES['files']['type'][$key];
if($file_size > 2097152){
$errors[]='File size must be less than 2 MB';
}
$query="INSERT into upload_data (`USER_ID`,`FILE_NAME`,`FILE_SIZE`,`FILE_TYPE`) VALUES('$user_id','$file_name','$file_size','$file_type'); ";
$desired_dir="user_data";
if(empty($errors)==true){
if(is_dir($desired_dir)==false){
mkdir("$desired_dir", 0700); // Create directory if it does not exist
}
if(is_dir("$desired_dir/".$file_name)==false){
move_uploaded_file($file_tmp,"$desired_dir/".$file_name);
}else{ // rename the file if another one exist
$new_dir="$desired_dir/".$file_name.time();
rename($file_tmp,$new_dir) ;
}
mysql_query($query);
}else{
print_r($errors);
}
}
if(empty($error)){
echo "Success";
}
}