note 49916 added to language.oop
| From: | alberto dot delatorre at gmail dot com | Date: | Fri, 11 Feb 2005 23:10:23 +0000 |
| Subject: | note 49916 added to language.oop | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-84876@lists.php.net to get a copy of this message | ||
If you have a class hierarchy as this:
<?php
abstract class A{
//construct ommited
public function load(){
$this->_load();
}
protected abstract function _load();
}
class B extends A{
protected function _load(){
echo "loaded";
}
}
$b = new B();
$b->load();
?>
you encountered that you will have a 'calling an abstract method' in the line with
'$this->_load'. To avoid this, just make another reference to $this and then call the
method you'd want, this way:
<?php
abstract class A{
//construct ommited
public function load(){
$aux_this=&$this;
$aux_this->_load();
}
protected abstract function _load();
}
class B extends A{
protected function _load(){
echo "loaded";
}
}
$b = new B();
$b->load();
?>
----
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