I have now tried everything imaginable.
The following problem occurs:
In the terminal PHP runs in version PHP 7.4.12 from MAMP.
php -v output:
PHP 7.4.12 (cli) (built: Nov 30 2020 13:28:43) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
When I output the path with which php I get this output:
 ❯ which php
 /Applications/MAMP/bin/php/php7.4.12/bin/php
If I now in my CakePHP project in the cake.php php phpinfo(); me using cake/Console/cake.php output, I get the PHP
phpinfo()
PHP version => 7.3.24-(to be removed in future macOS) 
I have as far as possible the php version for the CLI modified. This in all imaginable files. In ~/.zshrc the path is: export PATH=/Applications/MAMP/bin/php/php7.4.12/bin:$PATH. Which was also confirmed with which php.
My System:
- MacOS Big Sur Version 11.2.3
- MAMP Pro Version 6.3
- CakePHP 2.10.24
 
    