Description:
------------
New opcache directives have been added recently which are returned if using `ini_get_all('zend opcache')` but are not listed in the directives if using `opcache_get_configuration()`.

Test script:
---------------
<?php

$opts = opcache_get_configuration()['directives'];
$inis = ini_get_all('zend opcache');

var_dump(array_diff_key($inis, $opts));

?>

Expected result:
----------------
array(0) {
}


Actual result:
--------------
array(4) {
  ["opcache.file_update_protection"]=>
  array(3) {
    ["global_value"]=>
    string(1) "2"
    ["local_value"]=>
    string(1) "2"
    ["access"]=>
    int(7)
  }
  ["opcache.huge_code_pages"]=>
  array(3) {
    ["global_value"]=>
    string(1) "0"
    ["local_value"]=>
    string(1) "0"
    ["access"]=>
    int(4)
  }
  ["opcache.opt_debug_level"]=>
  array(3) {
    ["global_value"]=>
    string(1) "0"
    ["local_value"]=>
    string(1) "0"
    ["access"]=>
    int(4)
  }
  ["opcache.restrict_api"]=>
  array(3) {
    ["global_value"]=>
    string(0) ""
    ["local_value"]=>
    string(0) ""
    ["access"]=>
    int(4)
  }
}