note 126912 added to function.eval
| From: | stocki dot r at gmail dot com | Date: | Thu, 10 Mar 2022 08:35:56 +0000 |
| Subject: | note 126912 added to function.eval | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-217703@lists.php.net to get a copy of this message | ||
You can use
eval() to combine classes/traits dynamically with anonymus classes:
<?php
function init($trait, $class) {
return (trait_exists($trait) && class_exists($class))
? eval("return new class() extends {$class} { use {$trait}; };")
: false;
}
trait Edit {
function hello() { echo 'EDIT: ' . $this->modulename; }
}
trait Ajax {
function hello() { echo 'AJAX: ' . $this->modulename; }
}
class MyModule {
public $modulename = 'My Module';
}
class AnotherModule {
public $modulename = 'Another Module';
}
init('Edit', 'MyModule')->hello(); # 'EDIT: My Module'
init('Ajax', 'AnotherModule')->hello(); # 'AJAX: Another Module'
?>
----
Server IP: 45.112.84.4
Probable Submitter: 80.90.5.135 (proxied: 79.172.252.86)
----
Manual Page -- https://php.net/manual/en/function.eval.php
Edit -- https://main.php.net/note/edit/126912
Del: integrated -- https://main.php.net/note/delete/126912/integrated
Del: useless -- https://main.php.net/note/delete/126912/useless
Del: bad code -- https://main.php.net/note/delete/126912/bad+code
Del: spam -- https://main.php.net/note/delete/126912/spam
Del: non-english -- https://main.php.net/note/delete/126912/non-english
Del: in docs -- https://main.php.net/note/delete/126912/in+docs
Del: other reasons-- https://main.php.net/note/delete/126912
Reject -- https://main.php.net/note/reject/126912
Search -- https://main.php.net/manage/user-notes.php