Is it possible to doesn't check small piece of code based on PHP_VERSION_ID and create annotation about it

It's an idea which can offer to developers to use old PHP functions without errors, notices,... Basically, php has constant PHP_VERSION_ID ( http://php.net/manual/en/reserved.constants.php#reserved.constants.core ). It's integer and it's very helpful for conditional which depends on php version.

Example:

if ( PHP_VERSION_ID < 50400 && ini_get('safe_mode') ) {
      // here is old code which works on PHP 5.2 and 5.3 if it's safe_mode
}

or second example

if ( PHP_VERSION_ID < 50400 && $quotes ) {             
    ini_set('magic_quotes_runtime', 0);  
}

It offers chance to we can create efficient code (which passes all tests) with PHP backwards compatibility.

No file, test, or entry point is identified in the issue. Start by reviewing how PHPCompatibility rules report old PHP functions and whether the project has existing annotations or conditional suppression support; define the annotation syntax, supported PHP_VERSION_ID conditions, and tests needed before implementation.