Let's talk about parent and self:
Copy CodeThe code is as follows:
/*
* Created by Yinyiniao
*/
Class a{
function __construct () {
The construction method of echo "base Class A"
";
}
}
Class B extends a{
function __construct () {
Parent::__construct ();
How to construct echo "sub-Class B"
";
Self::myfun ();
}
function Myfun () {
echo "A common method Myfun ()
";
}
}
$obj =new A ();
$obj =new B ();
?>
Self and $this are very similar in function, but they are not the same. $this cannot reference static members and constants. Self is more like a class skill, and $this is more like the instance itself.
http://www.bkjia.com/PHPjc/327493.html www.bkjia.com true http://www.bkjia.com/PHPjc/327493.html techarticle let's talk about parent and self: Copy code code as follows:? PHP/* * Created by Yinyiniao */class a{function __construct () {echo "base Class A construction method br/";}} Class B extends a{function ...
