This question came out of the answer to this question .
I have nothing against php, but off. The documentation did not find such information.
That's why I ask, " Where is it written in the off documentation that the upload file lives in a temporary folder until the script ends? "
links:
upload strange browser behavior
Is the downloadable file in the temporary folder after the script ends?
Where does the server upload? (there is no file in the temporary folder). upload_tmp_dir