php - How to avoid: Warning: POST Content-Length of 47820076 bytes exceeds the limit of 8388608 bytes in Unknown on line 0

Solution:

This is what worked for me. It seems that when PHP sees a file that is too large, deletes all the POST data. So this code fragment worked for me:

if ($_SERVER['REQUEST_METHOD'] == 'POST' && count($_POST) < 1 ) {
    $_SESSION['error'] = 'File upload size exceeded';
    header('Location: index.php');
    return;
}
Copy code

Of course your page should be designed not to submit empty POST pages with no input parameters.

Solution:

One thing what you can do is give a maximum size on the HTML form.

<input type="hidden" name="MAX_FILE_SIZE" value="4194304" /> 
Copy code

It's not bulletproof, but it has some impact. Why this is not so good is explained in this comment - it is only checked by PHP, so uploading will start and continue up until this limit is reached.

My recommendation is that you could use that together with a javascript solution, as described here. It only works if javascript is enabled, of course.