PHP - empty $_POST and $_FILES - when uploading larger files

Question

I have a following problem, I have HTML form that uploads a file with some extra information. But it allows to upload files that only less then 10MB. But when user tries to

Answer 1

There are some limits - both on client and server side.

On client side, the MAX_FILE_SIZE field is not of much use, perhaps browser may take it as a hint; but rather browsers follow their configured limits.

On server side, check php.ini for:

upload_max_filesize = 5M

post_max_size = 5M 

max_input_time = ...

Also check Apache's log for notes about dropped POST body or such.