Description:
------------
Here is a bug coming from OPCACHE (I think because doesn't appears when disabled). Random evaluation of a variable when OPCACHE is activated. At first run I obtain "bool(false) bool(false) bool(false) bool(false)", After some refresh I always obtain "bool(true) bool(true) bool(true) bool(true)". This bug doesn't appear when all the scripts are in the same file. The bug exists on all 7.2.x and 7.3.x.

Test script:
---------------
test.php :
===
<?php

require 'test2.php';

function myRet(){
  return 45;
}

$toto = new Toto();
$toto->process1();
-----------------------
test2.php :
===
<?php
class Toto
{
    public function process1()
    {
        $array_error = [];
        $keep_products = [1, 2, 3, 4];
        foreach ($keep_products as $k => $v)
        {
            $id_country = myRet();
            if ($id_country === false && false)
            {
            }

            var_dump($id_country === false);
        }
    }
}
---------------------
Dockerfile :
===
FROM php:7.2.0-fpm-alpine
RUN docker-php-ext-install opcache
WORKDIR /var/www
EXPOSE 9000
CMD ["php-fpm"]


Expected result:
----------------
bool(false) bool(false) bool(false) bool(false)

Actual result:
--------------
after fome refresh : bool(true) bool(true) bool(true) bool(true)