note 104260 added to language.oop5.constants
| From: | tmp dot 4 dot longoria at gmail dot com | Date: | Sat, 04 Jun 2011 08:52:19 +0000 |
| Subject: | note 104260 added to language.oop5.constants | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-180246@lists.php.net to get a copy of this message | ||
it's possible to declare constant in base class, and override it in child, and access to
correct value of the const from the static method is possible by 'get_called_class'
method:
<?php
abstract class dbObject
{
const TABLE_NAME='undefined';
public static function GetAll()
{
$c = get_called_class();
return "SELECT * FROM
".$c::TABLE_NAME."";
}
}
class dbPerson extends dbObject
{
const TABLE_NAME='persons';
}
class dbAdmin extends dbPerson
{
const TABLE_NAME='admins';
}
echo dbPerson::GetAll()."<br>";//output: "SELECT * FROM
persons"
echo dbAdmin::GetAll()."<br>";//output: "SELECT * FROM
admins"
?>
----
Server IP: 69.147.83.197
Probable Submitter: 195.191.146.11
----
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