note 16762 deleted from keyword.extends by jimw
| From: | jimw@php.net | Date: | Fri, 16 Nov 2001 00:38:16 +0000 |
| Subject: | note 16762 deleted from keyword.extends by jimw | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-20900@lists.php.net to get a copy of this message | ||
Here is a limitation of class inheritance: A subclass may call the constructor of its parent, but
its parent's constructor cannot call another function in the parent class.
class a {
function a() {
$this->init()
}
function init() {
print("hello from a!");
}
};
class b extends a {
function b() {
parent->a()
init();
}
function init() {
print("hello from b!");
}
};
$bb = new b();
will not print
hello from a
hello from b
but
hello from b
hello from b