Re: Array dereferencing of scalars

Yasuo Ohgaki wrote: > I fully agree that current behavior could be used meaningful ways. However, > > <?php > $foo = 42; > $foo['bar']; // => NULL > $v = NULL; > $v[0][1][2][3][4][5][6][7][8][9]; // NULL > > this code is semantically wrong and I would like to have error/exception > for such > erroneous codes. It's inconsistent with array object, too. > > Raising exception/error is correct behavior for types that aren't array. > To avoid errors, users should use isset()/is_array()/etc. I agree that the code is not clean, and that an isset check is appropriate, particularly as one could do: $v = NULL; $v[0][1][2][3][4][5][6][7][8][9] ?? NULL; // NULL > Since we have debate for this PR, this PR would be good for RFC targeting > PHP 7.1. It seems to me that raising an exception or throwing an error (instead of a notice) could be too much of a BC break for a minor version. -- Christoph M. Becker