echo "<pre>";
var_dump(realpath_cache_get());
echo "</pre>";
/*
run:
array(15) {
["C:\\xampp"]=>
array(8) {
["key"]=>
int(1076452582)
["is_dir"]=>
bool(true)
["realpath"]=>
string(8) "C:\xampp"
["expires"]=>
int(1468662304)
["is_rvalid"]=>
bool(false)
["is_wvalid"]=>
bool(false)
["is_readable"]=>
bool(false)
["is_writable"]=>
bool(false)
}
["C:\xampp\php"]=>
...
*/