note 124025 added to language.oop5.traits
| From: | gulaschsuppe2 at gmail dot com | Date: | Mon, 08 Jul 2019 11:34:26 +0000 |
| Subject: | note 124025 added to language.oop5.traits | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-211540@lists.php.net to get a copy of this message | ||
Like shown in other examples it is possible to define a constructors and destructors in traits:
<? php
trait T {
public $prop = null;
public function __construct($prop) {
echo "Constructor called\n";
$this->prop = $prop;
}
public function __destruct() {
echo "Destructor called\n";
}
}
class A {
use T;
}
$a = new A("Hello World\n"); // Constructor called
echo $a->prop; // Hello World
// Destructor called
?>
It is also possible to use trait methods as constructor/destructor using them with the alias
'__construct'/'__destruct':
<?php
trait T {
public $prop = null;
public function constructor($prop) {
echo "Constructor called\n";
$this->prop = $prop;
}
public function destructor() {
echo "Destructor called\n";
}
}
class A {
use T {
T::constructor as __construct;
T::destructor as __destruct;
}
}
$a = new A("Hello World\n"); // Constructor called
echo $a->prop; // Hello World
// Destructor called
?>
----
Server IP: 208.43.231.9
Probable Submitter: 185.85.3.195 (proxied: 2a02:8109:dc0:a4:1967:358c:294f:6e92)
----
Manual Page -- http://php.net/manual/en/language.oop5.traits.php
Edit -- https://master.php.net/note/edit/124025
Del: integrated -- https://master.php.net/note/delete/124025/integrated
Del: useless -- https://master.php.net/note/delete/124025/useless
Del: bad code -- https://master.php.net/note/delete/124025/bad+code
Del: spam -- https://master.php.net/note/delete/124025/spam
Del: non-english -- https://master.php.net/note/delete/124025/non-english
Del: in docs -- https://master.php.net/note/delete/124025/in+docs
Del: other reasons-- https://master.php.net/note/delete/124025
Reject -- https://master.php.net/note/reject/124025
Search -- https://master.php.net/manage/user-notes.php