Description:
------------
This works on PHP 7.4 and also works on PHP 8 with other objects like new \stdClass.

Test script:
---------------
<?php
// create FFI object, loading libc and exporting function printf()
$ffi = FFI::cdef(
    "int printf(const char *format, ...);", // this is regular C declaration
    "libc.so.6");
// call C printf()
$ffi->printf("Hello %s!\n", "world");
if ($ffi) {
    print 'ok';
}



Expected result:
----------------
Hello world!
ok

Actual result:
--------------
Hello world!
PHP Recoverable fatal error:  Object of class FFI could not be converted to bool in /home/kelunik/test.php on line 8