PHP not process data from multipart/form-data forms - php

Question

My website does no process data from forms with the enctype="multipart/form-data" set. However the 'php://input' gets the data even if the php manual says it shouldn't be available for the enctype. I think it might be some settings that is wrong but I have no idea which it might be.
Some code:
<?php
var_dump($_REQUEST);
echo file_get_contents("php://input");
?>
<form id="slideForm" action="" method="post" enctype="multipart/form-data">
<input type="text" name="test">
<input type="submit" name="submit" id="submit" value="ADD"/>
</form>
Update
I have been in contact with the support of the company that host the servers for my website and we have solved the problem. I'm not completly sure on what is the problem but it was somethin funky with their servers and php. I don't work on PHP 7.0 or PHP 5.6 but if I use their native (PHP 5.5) it works without problems.

Answer 1

I don't understand which type of data you want to POST. If it's just a test you should only have:
<?php
var_dump($_POST);
?>
<form id="slideForm" action="" method="post">
<input type="text" name="test">
<input type="submit" name="submit" id="submit" value="ADD"/>
</form>
If you want to POST a file you must have:
<?php
var_dump($_POST);
?>
<form id="slideForm" action="" method="post" enctype="multipart/form-data">
<input type="file" name="test">
<input type="submit" name="submit" id="submit" value="ADD"/>
</form>
Make sure you are able to POST data on your php server.
Check these php variables:
upload_max_filesize
upload_tmp_dir
file_uploads

Answer 2

In most cases you will not need to use this attribute at all. The default value (i.e. if you don't use this attribute at all) is "application/x-www-form-urlencoded", which is sufficient for almost any kind of form data. The one exception is if you want to do file uploads. In that case you should use "multipart/form-data".
Try the following code for echo "test" data.
<?php
var_dump($_REQUEST);
echo $_REQUEST['test'];
?>
<form id="slideForm" action="" method="post">
<input type="text" name="test">
<input type="submit" name="submit" id="submit" value="ADD"/>
</form>

Answer 3

I tried your code, and it is working as expected:
the $_REQUEST is populated properly and the php-input is empty.
Considering that your code looks fine, and it is working as expected on my server, i suggest you check your .htacces (or equivalent) for filter/rewrite modules, maybe even server config settings or even page encoding.
99% it's not the code itself.

Answer 4

<?php
// File data will display here
print_r($_FILES);
// OR you can write with condition
if($_FILES['test']){
print_r($_FILES);
}
?>
<form id="slideForm" action="" method="post" enctype="multipart/form-data">enter code here
<input type="file" name="test">
<input type="submit" name="submit" id="submit" value="ADD"/>
</form>

Answer 5

When you send the header Content-Type:multipart/form-data; PHP parses the data from request into $_POST and $_FILES and clears the input buffer. In order to read the input buffer you should remove that header.