How to check whether Global Register for opline and execute_data is open or not

1. Background of the problem: recently, it has been almost exclusively said on php7, that only php7 compiled with GCC 4.8 will open Global Register for opline and execute_data

.

2. Question description:
Q: what is
1Global Register for opline and execute_data?
2 how do I check whether Global Register for opline and execute_data is enabled? (for example, using yum installation)

Feb.26,2021
Menu