(PHP 4)
php_uusetoption -- Sets a value to an option.
int php_uusetoption (int opt, mixed val)
This function sets one of the configuration options. For integer options, val must be an integer and for string options,
it must be a string. This function returns UURET_ILLVAL if you try to set a read-only value, or UURET_OK otherwise.