Re: Object comparison

On 11/08/2012 05:07 PM, Sara Golemon wrote:

From: http://php.net/manual/en/language.operators.comparison.php An object compared to anything which is not a bool, null, or object should result in the object appearing to be greater than the other operand. For example: $a = new stdClass(); $b = new stdClass(); var_dump(null < $a); var_dump(false < $a); var_dump(true == $a); var_dump($a == $b); var_dump(0 < $a); var_dump(1 < $a); // false var_dump(2 < $a); // false var_dump("foo" < $a); var_dump("2" < $a); var_dump(tmpfile() < $a); Based on docs, I expect all nine of these to yield true, however in practice, the two marked "false" come out as false because the RHS object is converted to an integer (1), contrary to the docs. Doc bug? Or code bug? I'm inclined to call it a code bug, but wanted others' thoughts. -Sara

You seem to be reporting a bug ("contrary to the docs"), but you might be suggesting that the doc be corrected (since doc and behaviour should always match). I would suggest being very careful about implementing something as central as a change to how comparisons are made, that ought to be approached with great caution because it has the potential for breaking a huge amount of existing code. [It does occur to me however, simply as a point of interest, that objects traditionally have both a constructor and a destructor, and the idea of objects also having a comparator makes a certain amount of sense; a default object comparator might implement the currently defined comparisons while allowing derived classes to override the default behaviour and leaving comparisons not involving objects undisturbed.] Comparing objects to scalars is really an apples/oranges comparision to begin with.