How to open a directory for writing?

Question

linux

PHP Warning: /home/user/Projects/my-app/www/app/tmp/cache/models/schemes/ is not writable

Tried to solve:
chmod -R 777 tmp
sudo chmod -R 777 tmp
chown -R $USER:$ GROUPS tmp
sudo chown -R $USER:$GROUPS tmp

Nothing helps. How to be?

Answer 1

it’s bad that the error message is not normal, but crooked, but in general, problems with rights are solved as follows:
1. The folder itself must be open for writing for the user under which PHP is running
2. All folders in the path must be available for execution for the user under which launched RNR. the right to execute means for a folder the ability to go to this folder. and in order to get into the target destination folder, the user must be able to go to all parent folders