note 64445 added to language.oop5.typehinting
| From: | phponlinedoc-a-t-krasse-d-o-t-info at osu1 dot php dot net | Date: | Fri, 14 Apr 2006 14:15:56 +0000 |
| Subject: | note 64445 added to language.oop5.typehinting | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-108073@lists.php.net to get a copy of this message | ||
Hi BKuker,
it works in version 5.1.2-1ubuntu2:
--------------------------------------------------------------
Code:
<pre>
<?PHP
class cRight {
}
class cWrong {
}
class cTest {
function bla(cRight $r = null) {
if (!isset($r)) {
echo "nothing\\n";
} else {
var_dump($r);
}
}
}
$mysqli = new mysqli();
$right = new cRight();
$wrong = new cWrong();
$test = new cTest();
$test->bla($right);
$test->bla(null);
$test->bla();
$test->bla($wrong);
?>
--------------------------------------------------------------
gives the result:
object(cRight)#2 (0) {
}
nothing
nothing
Fatal error: Argument 1 passed to cTest::bla() must be an instance of cRight, ...
--------------------------------------------------------------
You must add " = null " to the type hint, which is reasonable in my eyes.
So as a coder of the method bla(), you can rely that you get a real object, unless you explicitely
allow to get null in the method declaration, in which case you have to check, if you get a real
object.
----
Server IP: 66.163.161.117
Probable Submitter: 88.72.234.4
----
X-Spam-Status: No, hits=4.1 required=5.0 tests=DATE_MISSING,FROM_NO_LOWER,
HTML_30_40,HTML_MESSAGE autolearn=no version=2.64
----
Manual Page -- http://www.php.net/manual/en/language.oop5.typehinting.php
Edit -- http://master.php.net/note/edit/64445
Del: integrated -- http://master.php.net/note/delete/64445/integrated
Del: useless -- http://master.php.net/note/delete/64445/useless
Del: bad code -- http://master.php.net/note/delete/64445/bad+code
Del: spam -- http://master.php.net/note/delete/64445/spam
Del: non-english -- http://master.php.net/note/delete/64445/non-english
Del: in docs -- http://master.php.net/note/delete/64445/in+docs
Del: other reasons-- http://master.php.net/note/delete/64445
Reject -- http://master.php.net/note/reject/64445
Search -- http://master.php.net/manage/user-notes.php