PDT supports PHP versions 5.1/5.2/5.3/5.4/5.5/5.6/7.0/7.1/7.2/7.3/7.4/8.0/8.1/8.2/8.3
PHP version settings affect:
PHP version settings can be configured from the following places:
In order to minimize errors, the PHP Executable used for debugging should match the PHP version used for the project.