Unable to remove PHP old path from system

Ever since I updated my MacBook PRO from 8.0 8.2, I can't seem to symlink php or add php to path anymore. I have to give the full path.

$ php -v
-bash: /Applications/MAMP/bin/php/php8.0.8/bin/php: No such file or directory

$ /Applications/MAMP/bin/php/php8.2.0/bin/php -v
PHP 8.2.0 (cli) (built: Dec  9 2022 09:00:24) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.2.0, Copyright (c) Zend Technologies

$ sudo mv /usr/bin/php /usr/bin/~php
mv: rename /usr/bin/php to /usr/bin/~php: Operation not permitted
$ sudo ln -s /Applications/MAMP/bin/php/php8.2.0/bin/php /usr/bin/php
ln: /usr/bin/php: Operation not permitted

$ export PATH=$PATH:/Applications/MAMP/bin/php/php8.2.0/bin
$ php -v
-bash: /Applications/MAMP/bin/php/php8.0.8/bin/php: No such file or directory
$ echo $PATH
blah-blah-blah:/Applications/MAMP/bin/php/php8.0.8/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/MAMP/bin/php/php8.2.0/bin:blah-blah-blah:

php -v
-bash: /Applications/MAMP/bin/php/php8.0.8/bin/php: No such file or directory

Where is php8.0.8 stoned in ? Which file do I search for ? macOS Mojave.