php input stream size limitations - php

I am trying to read a raw input stream from php using php://input. This works for most files, however, files over 4MB are being ignored in the upload. I have set post_max_size and upload_max_size to 20M each thinking it would solve my problem, but it didn't. Is there another php.ini setting that needs to be configured or do I need to do chunking of some sort? If so, how would I go about doing that? Here is the upload.php code:
$fileName = $_SERVER['HTTP_X_FILE_NAME'];
$contentLength = $_SERVER['CONTENT_LENGTH'];
file_put_contents('uploads/' . $fileName, file_get_contents("php://input"));

Try stream_copy_to_stream, which directly pumps the content of the input into the file without copying it all into memory first:
$input = fopen('php://input', 'rb');
$file = fopen($filename, 'wb');
stream_copy_to_stream($input, $file);
fclose($input);
fclose($file);
Alternative:
$input = fopen('php://input', 'rb');
$file = fopen($filename, 'wb');
while (!feof($input)) {
fwrite($file, fread($input, 102400));
}
fclose($input);
fclose($file);

Related

Downloading file, changing extension and merging into 1 file

Trying to download files via the URL, rename from the .ADM extension to .txt
then put contents of each file into a single txt file
However its saying the fputs param 2 is a resource
The $logfile['name'] is the filename thats stored in the array
Heres my code
foreach($items as $logfile)
{
$getfile = $logfile['Download'];
$newfile = file_put_contents(str_replace('ADM','txt',$logfile['name']),
file_get_contents($getfile));
$name = str_replace('ADM','txt',$logfile['name']);
$newfile = $name;
$file = fopen($newfile, 'rb');
$output = fopen('tmp/test.txt', 'wb');
fputs($output, $file);
fclose($output);
fclose($file);
}
Its downloading each and renaming however its not moving the content & giving me this error
Warning: fputs() expects parameter 2 to be string, resource given in
The second parameter of fputs is the content of a file. Not a file resource.
Instead of
$file = fopen($newfile, 'rb');
You‘ll need to get the contents of the file
$content = file_get_contents($newfile);
Or, if you like to use fopen, you can use fread:
$file = fopen($newfile, 'rb');
$content = fread($fp, filesize($newfile));
Then you can put this content into another file:
fputs($output, $content);

how to read contents from PUT request and grab the file contents in variable php

below is the code which i want to modify
$input = fopen("php://input", "r");
$temp = tmpfile();
$realSize = stream_copy_to_stream($input, $temp);
fclose($input);
if ($realSize != $this->getSize()){
return false;
}
$target = fopen($path, "w");
fseek($temp, 0, SEEK_SET);
stream_copy_to_stream($temp, $target);
fclose($target);
I want to save the contents into the memory and transfer it accross to other server without saving it on apache server.
when i try to output the contents i only see resource id# 5. Any suggestion, comments are highly apprecited . thanks
The code you have opens file handles, which in themselves are not the content. To get the content into a variable, just read it like any other file:
$put = file_get_contents('php://input');
To get the contents of the stream:
rewind($temp); // rewind the stream to the beginning
$contents = stream_get_contents($temp);
var_dump($contents);
Or, use file_get_contents as #deceze mentions.
UPDATE
I noticed you're also opening a temp file on disk. You might want to consider simplifying your code like so:
$put = stream_get_contents(STDIN); // STDIN is an open handle to php://input
if ($put) {
$target = fopen('/storage/put.txt', "w");
fwrite($target, $put);
fclose($target);
}

Extracting text between values in txt file using php

Im trying to extract the values between eng_tid
and eng_data for http://fdguirhgeruih.x10.mx/html.txt and I keep getting T string errors.
why do I keep getting errors
<? php
//First, open the file. Change your filename
$file = "http://fdguirhgeruih.x10.mx/html.txt";
$word1='tid';
$word2='data';
$handle = fopen($file, "r");
$contents = fread($handle, filesize($file));
fclose($handle);
$between=substr($contents, strpos($contents, $word1), strpos($contents, $word2) - strpos($contents, $word1));
echo $between;
?>
UPDATE after seeing error messages...
Instead of fread() and attempting to use the size in bytes of your target file, you may simply use file_get_contents() to retrieve the remote file. Your error is because PHP wants to read the filesize of the file as though it is local, but it is a remote file over HTTP. filesize() reports 0 and an error. Instead do
// Don't do this...
//$handle = fopen($file, "r");
//$contents = fread($handle, filesize($file));
//fclose($handle);
// Instead do this...
$contents = file_get_contents($file);

Using php://input and file_put_contents

I'm receiving files (images) uploaded with Ajax into my PHP script and have got it to work using this:
$input = fopen("php://input", "r");
file_put_contents('image.jpg', $input);
Obviously I will sanitize input before this operation.
One thing I wanted to check was the file size prior to creating the new file, as follows:
$input = fopen("php://input", "r");
$temp = tmpfile();
$realsize = stream_copy_to_stream($input, $temp);
if ($realsize === $_SERVER["CONTENT_LENGTH"]) {
file_put_contents('image.jpg', $temp);
}
And that doesn't work. The file is created, but it has a size of 0 bytes, so the content isn't being put into the file. I'm not awfully familiar with using streams, but I don't see why that shouldn't work, so I'm turning to you for help. Thanks in advance!
The solution was deceptively simple:
$input = fopen("php://input", "r");
file_put_contents($path, $input);
You are using file resources as if they were strings. Instead you could again use stream_copy_to_stream:
stream_copy_to_stream($temp, fopen('image.jpg', 'w'));

Copying file uploaded vai PHP's HTTP Get in PHP 4

I have been working on adding functionality to a site originally written in PHP 4.4.9. It's not in their budget to port the site to PHP5, so don't even suggest it. (Although it needs it badly). The problem I am facing is how to copy binary data from a GET request to a file location on the server. The code that is currently written to support this method is as follows:
function save($path) {
$input = fopen("php://input", "r");
$temp = tmpfile();
$realSize = stream_copy_to_stream($input, $temp);
fclose($input);
if ($realSize != $this->getSize()){
return false;
}
$target = fopen($path, "w");
fseek($temp, 0, SEEK_SET);
stream_copy_to_stream($temp, $target);
fclose($target);
}
The problem that I am having with this is the funciton stream_copy_to_stream is only supported in PHP 5. Here is what I have so far, but it seems to only create files that are 8K in size and I'm not sure why. It should, in theory, allow for up to 20M.
function save($path) {
$input = fopen("php://input", "rb");
$temp = tmpfile();
fwrite($temp, fread($input, 20971520));
fclose($input);
$target = fopen($path, "w");
fseek($temp, 0, SEEK_SET);
#stream_copy_to_stream($temp, $target);
fwrite($target, fread($temp, 20971520));
fclose($target);
echo $path;
return true;
}
I removed the size check because I couldn't figure a way to get the filesize when reading. Any help is greatly appreciated on this. I have been racking my brain for literally hours and I know there is someone out there, most likely on stackoverflow, that can answer my question probably very easily.
Thanks for all the help in advance!
Also, I am submitting data via GET to to allow multiple file uploads with progress bars, etc.
I came across this thread looking for answer for exact same problem.
I know post is old but putting answer here for anyone else looking.
You were close.
fread only takes 8192 byte chunks out of stream at a time. So you will have to loop through until it sees end of file.
function save($path) {
$input = fopen("php://input", "rb");
$temp = tmpfile();
while(!feof($input))
fwrite($temp, fread($input, 8192));
//fwrite($temp, fread($input, 20971520));
fclose($input);
$target = fopen($path, "w");
fseek($temp, 0, SEEK_SET);
#stream_copy_to_stream($temp, $target);
while(!feof($temp))
fwrite($target, fread($temp, 8192));
fclose($target);
echo $path;
return true;
}

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