note 123605 added to language.oop5.anonymous
| From: | sebastian.wasseratgmail@php.net | Date: | Tue, 12 Feb 2019 12:14:57 +0000 |
| Subject: | note 123605 added to language.oop5.anonymous | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-210232@lists.php.net to get a copy of this message | ||
I wanted to share my findings on static properties of anonymous classes.
So, given an anonymous class' object generating function like this:
<?php
function nc () {
return new class {
public static $prop = [];
};
}
?>
Getting a new object and changing the static property:
<?php
$a = nc();
$a::$prop[] = 'a';
var_dump($a::$prop);
// array(1) {
// [0] =>
// string(1) "a"
// }
?>
Now getting another object and changing the static property will change the original one, meaning
that the static property is truly static:
<?php
$b = nc();
$b::$prop[] = 'b';
var_dump($b::$prop); // Same as var_dump($a::$prop);
// array(2) {
// [0] =>
// string(1) "a"
// [1] =>
// string(1) "b"
// }
assert($a::$prop === $b::$prop); // true
?>
----
Server IP: 208.43.231.9
Probable Submitter: 185.85.3.142 (proxied: 148.63.55.13)
----
Manual Page -- http://php.net/manual/en/language.oop5.anonymous.php
Edit -- https://master.php.net/note/edit/123605
Del: integrated -- https://master.php.net/note/delete/123605/integrated
Del: useless -- https://master.php.net/note/delete/123605/useless
Del: bad code -- https://master.php.net/note/delete/123605/bad+code
Del: spam -- https://master.php.net/note/delete/123605/spam
Del: non-english -- https://master.php.net/note/delete/123605/non-english
Del: in docs -- https://master.php.net/note/delete/123605/in+docs
Del: other reasons-- https://master.php.net/note/delete/123605
Reject -- https://master.php.net/note/reject/123605
Search -- https://master.php.net/manage/user-notes.php