I'm uploading files (image or pdf) using AJAX. My process is converting the file to base64 then send the data via AJAX then process in server side (PHP) to become a image or pdf. This is my code in server side and it's working fine but failing when file size is above 500kb.
if ($picture_ext == 'pdf') { //pdf
$image_generated_name = $select_name . '_' . $generate_rand_num . '_file.pdf';
file_put_contents(WP_PLUGIN_DIR.'/plugin_name/uploads/'.$image_generated_name, base64_decode(substr($product_img_upload,28)));
} else { //image
file_put_contents(WP_PLUGIN_DIR.'/plugin_name/uploads/'.$image_generated_name, base64_decode(substr($product_img_upload,22)));
}
We dont know what the error is, but I suspect its possibly with your in variables post_max_size and upload_max_filesize. You can modifiy these in php.ini config,
Add the following commands before that is run, see if it works, and modify your ini based on that:
ini_set('post_max_size', '10M');
ini_set('upload_max_filesize', '10M');
This question already has answers here:
$_POST data returns empty when headers are > POST_MAX_SIZE
(5 answers)
Closed 8 years ago.
I have a php upload file process that works quite well. However I wanted to add some validation to ensure large files weren't uploaded, however when I was testing I noticed some strange behaviour;
I set post_max_size & upload_max_filesize to 5M (restarted server) but found that if I uploaded a file larger than 5M the POST data was lost, so I couldn't do a check on $_FILES['uploadedFile']['size']
I kinda solved the issue by ensuring that the post_max_size & upload_max_filesize were set to 10M (assuming of course no one will be silly enough to try a file bigger than that - its really for text files so they shouldn't) After which I could do my size validation without issue;
if($_FILES['uploadedFile']['size'] < 3072000)
{
//do upload stuff
}
else
{
$errorMessage .= 'File size to big, exceeds 3M Limit.';
}
I assume the problem is that the POST is getting obliterated because it exceeded post_max_size??? I searched through a lot of pages but couldn't see anyone else having a problem with this so I'm not sure if my assumption is right. If I upload a file bigger than 10Mm I still get the problem.
You are correct. Uploaded data is ignored, when the size limit is exceeded. So, you don't get access to the ['size'] info.
Instead, you need to validate your upload like this:
<?php
if ($_FILES['uploadedFile']['error'] == UPLOAD_ERR_OK)
{
// success - move uploaded file and process stuff here
}
else
{
// error
switch ($_FILES['uploadedFile']['error'])
{
case UPLOAD_ERR_INI_SIZE:
echo "The uploaded file exceeds the upload_max_filesize directive in php.ini."; break;
case UPLOAD_ERR_FORM_SIZE:
echo "The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form."; break;
case UPLOAD_ERR_PARTIAL:
echo "The uploaded file was only partially uploaded. "; break;
// etc... see the full list here http://uk1.php.net/manual/en/features.file-upload.errors.php
}
}
I have a form that lets users upload files but I'm having problems detecting files that are too large.
I have the following set in php.ini:
upload_max_filesize = 10M
post_max_size = 20M
I understand that the standard way to detect if files are larger than the config file allows is to check $_FILES['file_name']['error']. However this only works for me if the actual file is greater than upload_max_filesize and smaller than post_max_size.
If the actual file size is greater than post_max_size then the $_FILES variable is removed and I get the log message:
PHP Warning: POST Content-Length of xxx bytes exceeds the limit of
yyy ...
So the question: How do I detect if a user is uploading a file that is greater than post_max_size? I need to display a valid user message if this happens.
Thanks.
I suggest you use set_error_handler() and check for E_USER_WARNING error + appropriate message, and then send it to a user, possibly via throwing an Exception, possibly some other way.
Like this:
$filesize = $_FILES['file']['size'];
$limit = ini_get('post_max_size');
if($filesize > $limit) {
trigger_error("POST Content-Length of $filesize bytes exceeds the limit of $limit bytes.", E_WARNING);
}
else {
// upload file
}
I have a php form that uploads files, and all files work good the limit size is set at 7340032 bytes (7Mbs) and it works ok, however when I try to upload an image larger than 500kbs when I echo the values of the first if:
if(isset($_POST['upload']) && $_FILES['userfile']['size'] > 0){
it says the image size is 0 everytime, why would this happen? the php.ini values of post_max_size is 15M and of upload_max_filesize is 10M.
Checking if the uploaded file's size is non-zero is not the proper way to check if an upload succeeded. There's the ['error'] parameter in there for that. An incomplete upload would still have a non-zero size, but should not be processed. A better way to check is:
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
if ($_FILES['userfile']['error'] !== UPLOAD_ERR_OK) {
die("File upload error: {$_FILES['userfile']['error']}");
}
... process file here ...
}
The error code constants are defined here.
I have a file (image) upload script in PHP that I use to upload and resize images... It uses a simple MIME type and size validation so only jpg images are allowed and 1MB max file size.
I recently discovered a problem. When I try tu upload a .avi file using the script, the script processes the file like its the correct MIME type and size and then just do nothing, just takes me back to the upload form without any error message. (Instead of showing a "file too big" message).
I mean, if I try to upload a .gif or .txt or something else I get an error, as expected.
If I try to upload any file bigger than 1MB I get an error, as expected.
Only when I try to upload a .avi file with more than 1MB I dont get any kind of error.....
Well, here the first par of the code:
// define a constant for the maximum upload size
define ('MAX_FILE_SIZE', 1024000);
if (array_key_exists('upload', $_POST)) {
// define constant for upload folder
define('UPLOAD_DIR', 'C:/Wamp/www/Version-1.4/posters_uploaded/');
// replace any spaces in original filename with underscores. At the same time, assign to a simpler variable
$file = str_replace(' ', '_', $_FILES['image']['name']);
// convert the maximum size to KB
$max = number_format(MAX_FILE_SIZE/1024, 1).'kb';
// create an array of permitted MIME types
$permitted = array('image/jpeg','image/pjpeg');
// begin by assuming the file is unacceptable
$sizeOK = false;
$typeOK = false;
// check that file is within the permitted size
if ($_FILES['image']['size'] > 0 && $_FILES['image']['size'] <= MAX_FILE_SIZE) {
$sizeOK = true;
}
// check that file is of a permitted MIME type
foreach ($permitted as $type) {
if ($type == $_FILES['image']['type']) {
$typeOK = true;
break;
}
}
if ($sizeOK && $typeOK) {
switch($_FILES['image']['error']) {
case 0: // ...................
I'm just modifying a build PHP code so Im no expert...
Any suggestions??
Thanks.
http://us3.php.net/manual/en/features.file-upload.common-pitfalls.php
It looks like your upload_max_filesize ini-setting is too low. This would cause no error to be displayed when you upload a very large file such as an AVI video.
The reason you're seeing the errors with text files and .jpg images is likely because the size of those files are greater than 1 MB, but below your upload_max_filesize setting in php.ini.
Try echoing the value of ini_get("max_upload_filesize") and see what the value is if you don't have access to the php.ini file directly.
As john Rasch mentioned above, any file above the php.ini max_upload_filesize will not process at all. so you'll have no chance to test the error for you. you have to assume it was not uploaded and validate it if it was.
now that I understand your scenario better I think this is what you can do:
// at the top of your script
$upload_success = FALSE;
// when successfully detected upload
$upload_success = TRUE;
// if successful upload code is never run
$display_error = "File not uploaded, may be too large a file, "
. "please upload less than 1MB"
;
print $display_error;
main point being:
You can't always detect upload files that are too big because they get cut off at a level deeper than where the scripts run.
I'd also suggest that you don't believe the mime type. Sometimes people have .png or .gif file that have been renamed to .jpg, or they could upload incorrect files intentionally. Use getimagesize to check if these are valid jpeg images.
Don't forget, when uploading files, that there are actually two directives you need to pay attention to in php.ini. One is upload_max_filesize, but the other is post_max_size. Generally, post_max_size should at least be equal to, and probably greater than, upload_max_filesize. You can't upload a file greater than post_max_size, regardless of what you set your upload_max_filesize.
An AVI file won't match the mime types you have listed in your permitted array. After doing your $sizeOK and $typeOK checks, check to see what values they hold, and how your script handles those values. That might hold the key to the behavior of your script.
Above this line:
if ($_FILES['image']['size'] > 0 && $_FILES['image']['size'] <= MAX_FILE_SIZE) {
$sizeOK = true;
}
Put this:
echo '<pre>' . printr($_FILES) . </pre>;
That will show you what is inside the FILES array, and should make this pretty simple to debug. Try uploading the AVI with the above line added to your script.
Using $_FILES['image']['type'] for checking MIME is not reliable, it's base on header of the client and can be spoofed. Take a look at fileinfo extension to check MIME base on the real contents.
Eight years later, the short answer for anyone, like me, stumbling around for the answer to checking the image MIME type with PHP before uploading:
if (exif_imagetype($file['tmp_name']) != IMAGETYPE_JPEG) {
$file['error'] = 'Your picture must be jpg.';
}
From the manual: http://php.net/manual/en/function.exif-imagetype.php