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Date: Sat, 5 Jun 2010 22:47:34 +0200
Message-ID: <0A769B4E-C9DA-44F2-B3DA-5998D1D7E6E0@stefan-marr.de>
To: PHP internals <internals@lists.php.net>
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Subject: Traits and static variables
From: php@stefan-marr.de (Stefan Marr)

Hi:

Was just thinking about some details of the traits implementation.

=46rom my perspective, static variables in methods should work like the =
method would have been actually implemented in the class using the =
traits. Thus, static variables should be independent for the different =
traits usages.

Any thoughts on that?

Below, I attached the relevant test case.

Best regards
Stefan

--TEST--
Statics work like expected for language-based copy'n'paste. No link =
between methods from the same trait.
--FILE--
<?php
error_reporting(E_ALL);

trait Counter {
  public function inc() {
    static $c =3D 0;
    $c =3D $c + 1;
    echo "$c\n";
  }
}


class C1 {
  use Counter;
}

class C2 {
  use Counter;
}

$o =3D new C1();
$o->inc();
$o->inc();

$p =3D new C2();
$p->inc();
$p->inc();

?>
--EXPECTF--=09
1
2
1
2