Re: [Zend Engine 2] RFC: Conversion patch

At 04:41 PM 11/26/2002 -0500, Daniel Cowgill wrote:

So why do the conversion in arithmetic? This seems bizarrely inconsistent to me: <? print (int) "0xA" + 0; // prints 0 print (int) ("0xA" + 0); // prints 10 ?> I think it's reasonable to expect those expressions to return the same value.

Hmm, this is definitely interesting. The result of the second expression should be 0 too. I haven't had time to check why this happens as all conversions in zend_operators.c are with base 10. I vaguely remember someone changing something in this area a while ago. BTW in PHP 4.0.4 this prints out "1" (the second expression) which doesn't make much sense. The reason for this is that is_numeric_string() which is used in add_function() does convert hexadecimals whereas all other code in zend_operators.c doesn't. This is a pretty bad inconsistency which should be addressed. Andi

On Tue, 26 Nov 2002, Andi Gutmans wrote: http://marc.theaimsgroup.com/?l=php-dev&m=90279104406264&w=2 There's more... Andi At 10:21 PM 11/26/2002 +0100, Derick Rethans wrote:

On Tue, 26 Nov 2002, Andi Gutmans wrote:

I remember having a long conversation on this issue quite a long

time ago.

I think it was on php-dev. The bottom line was that we only want

conversion

in the scanner and not within PHP.

Too bad, because the following thing is totally uninituitive: echo (int)"0x200"; (prints "0") And I searched for a discussion on this, but couldnt' find it. I wonder why it was decided to be like this. Derick -- -------------------------------------------------------------------------

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