phpredis calls php_random_bytes before random is initialised #1987

Expected behaviour

get_random_bytes() should be called once random has initialized it's fd global to -1.

Actual behaviour

phpredis calls get_random_bytes() before random_globals_ctor() is called resulting in the fd remaining 0. This breaks systems that rely on it (those without a getrandom() syscall) as an uninitialised fd is expected to be less than 0 (see line 156 in random.c).

I'm seeing this behaviour on

• OS: CentOS Linux release 7.9.2009
• Redis: 5.0.4
• PHP: 7.4.21
• phpredis: 5.3.2

Steps to reproduce, backtrace or example script

PHP's internals call GINIT functions before MINIT which describes the behaviour seen here (stepping through the process confirms this).

I've checked

• There is no similar issue from other users
• Issue isn't fixed in develop branch

phpredis should call get_random_bytes() in it's MINIT to prevent this problem.