Difference in behaviour of func_num_args,func_get_arg and func_get_args from php 5.2 to 5.3

Question

I have seen the PHP manual. But I don\'t understand the difference in behaviour between the earlier version and the later versions of PHP. I don\'t understand this statement

Answer 1

If you wanted to pass the result of one of those functions to another function or a method, in versions of PHP prior to 5.3 you had to first assign the result to a variable.

function some_func() {
    $args = func_get_args();
    some_other_func($args);
}

This limitation was removed in PHP 5.3 and you can now pass the result directly.

function some_func() {
    some_other_func(func_get_args());
}

As to why this limitation existed in the first place, perhaps someone with a more thorough understanding of PHP's internals can give you a more complete answer.