ID: 25772
Comment by: jevon at jevon dot org
Reported By: dmitrijsl at swh-t dot lv
Status: Open
Bug Type: Feature/Change Request
Operating System: *
PHP Version: 5.0.0b1 (beta1)
New Comment:
Would love this feature! Java implements this through:
class Object {
boolean equals(Object o);
}
So you could either make all user-defined objects include a simple
equals() function [and similarly, identical()].
Or perhaps, develop the aforementioned magic __equals() [and
__identical()] functions. (As well as __less())
Previous Comments:
------------------------------------------------------------------------
[2003-10-07 05:21:33] [EMAIL PROTECTED]
If at all then we should be able to do all comparisons directly by
__compare($other, $operator) where operator is one of {<,<=,==,!=,>,>=}
or by another method __less() which performs a < test so that __less()
and __equals() can be used to emulate all other tests.
------------------------------------------------------------------------
[2003-10-07 04:05:43] dmitrijsl at swh-t dot lv
Description:
------------
If a class defines a __equals($other) function, invoke that function on
object comparison. Example:
==========================
class MyClass {
public function __construct($value) {
$this->value = $value;
}
/**
* This function should be invoked on object
* comparison with == or != operators.
*/
public function __equals($other) {
if ($other instanceof MyClass) {
return ((int)$this->value
== (int)$other->value);
} else {
return false;
}
}
private $value;
}
$a = new MyClass(3.14);
$b = new MyClass(3.13);
if ($a == $b) {
echo '$a equals $b';
}
==========================
The comparison of $a and $b should result in the invokation of __equals
function of MyClass. The same should apply to the != (not equals)
operator.
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=25772&edit=1
