CAPICOM implementation does not work (fix)

[anzz1]

Problem: method_exists does not work for the COM class.
Tested non-working on Windows 7 x64, PHP5.6.32 (VC11-x86-ts) and PHP 7.3.33 (VC15-x86-nts)

Solution: Use is_callable instead.

      $util = new COM('CAPICOM.Utilities.1');
      $method = array($util, 'GetRandom');
      if (is_callable($method)) { ...

See this gist for implementation example: https://gist.github.com/anzz1/29a787fac8ef6d693b41779911287505

Here is the Microsoft CAPICOM 2.1.0.2 SDK if someone needs it.
While kinda obscure in 2022, it's still an easy way for to add crypto capability for Windows PHP if for some reason you can't upgrade PHP itself.

[paragonie-security]

Thank you for reporting this. The COM approach is definitely the coldest path for random_compat users, but we're happy to fix this.