getimagesize() returns no data? - php

Question

I get the following error when trying to upload a .JPG file.
Warning: getimagesize() [function.getimagesize]: Filename cannot be empty in H:\Programs\webserver\root\media\images\upload.php on line 43
The following is part of the upload.php file:
if(isset($_FILES['files']))
{
$cat = $_POST['cat'];
$title = $_POST['title'];
$album = $_POST['album'];
foreach($_FILES['files']['tmp_name'] as $key => $tmp_name)
{
// get dimensions of uploaded images
echo $temp = $_FILES['files']['tmp_name'][$key]; //location of file
echo $type = $_FILES['files']['type'][$key]; //image type
echo $size = $_FILES['files']['size'][$key]; // image size
>> line 43 >>**echo $size2 = getimagesize($temp); //function to get info of file and put into array**
echo $width = $size2[0]; // first part of the array is the image width
echo $height = $size2[1]; // second part fo the array is the image width
if($type == 'image/jpeg')
{
$filetype = '.jpeg';
}else{
$filetype = str_replace('image/','',$type);
}
$random_name = rand(1000,9999).rand(1000,9999).rand(1000,9999).rand(1000,9999);
$path = 'img/'.$random_name . $_FILES['files']['name'][$key];
$thumb_path = 'img/thumb_/'.$random_name .$_FILES['files']['name'][$key];
I have another .jpg image file that I have been uploading to test which uploads fine, also .png and .gif files also upload fine.
Just to add that I tried a couple more image files of a similar size and received the same error.
The first Image file was 4.2MB the second was 5MB. Why would the file size stop it uploading?
Also when using $_FILES['files']['error'][$key]; - it returns 1.
This is what i get when using print_r:
Array ( [files] => Array ( [name] => Array ( [0] => DSCN0354.JPG ) [type] => Array ( [0] => ) [tmp_name] => Array ( [0] => ) [error] => Array ( [0] => 1 ) [size] => Array ( [0] => 0 ) ) )

Answer 1

Lets look at the knowns:
You can upload .jpg, .gif, .png no problem
You are having problem uploading a specific .jpg image
These knowns lead me to believe that the problem image is too big for the current allowed upload_max_filesize in your php.ini settings:
$ -> php -i | fgrep -i size
upload_max_filesize => 2M => 2M
Try increasing the size to 6M or 8M and your bigger image should work.

Answer 2

If you add some error handling, you can easily see what the problem is using the error code:
foreach($_FILES['files']['tmp_name'] as $key => $tmp_name)
{
if ($_FILES['files']['error'][$key] == UPLOAD_ERR_OK)
{
// good
}
else
{
// not good, see messages on http://www.php.net/manual/en/features.file-upload.errors.php
}
}

Answer 3

You have to check for $_FILES['error'][$key] before accessing tmp_name - the file was not uploaded, either because it is too big or some other reason (you will find out by the value of 'error' field)

Answer 4

Also when using $_FILES['files']['error'][$key]; - it returns 1.
Error 1: The uploaded file exceeds the upload_max_filesize directive in php.ini.
(see http://www.php.net/manual/en/features.file-upload.errors.php)

Answer 5

The error message states that the filename supplied is empty.
You are using:
$size2 = getimagesize($temp);
Where do you get $temp from? Is it the foreach() and if it is, you should use $tmp_name instead.