https://www.php.net/manual/uk/function.mb-ereg-search-getpos.php
PHP: mb_ereg_search_getpos - Manual
Returns start point for next regular expression match
phpmberegsearchgetpos
https://www.intel.com/content/www/us/en/docs/fortran-compiler/developer-guide-reference/2025-2/getpos-getposi8.html
GETPOS, GETPOSI8
Portability Functions: Return the current position of a file.
getpos