<?php
class A{
public static function hello(){
echo 'hello';
}
}
class B extends A{
public function ok(){
echo 'ok';
}
public static function fprint(){
A::hello();
B::ok();
}
}
$obj = new B;
$obj->fprint();
?>
PD9waHAKZXJyb3JfcmVwb3J0aW5nKC0xKTsKY2xhc3MgQXsKICAgICBwdWJsaWMgc3RhdGljIGZ1bmN0aW9uIGhlbGxvKCl7CiAgICAgICAgZWNobyAnaGVsbG8nOwogICAgfQp9CgpjbGFzcyBCIGV4dGVuZHMgQXsgIAogICAgcHVibGljIGZ1bmN0aW9uIG9rKCl7CiAgICAgICAgZWNobyAnb2snOwogICAgfQoKICAgIHB1YmxpYyBzdGF0aWMgZnVuY3Rpb24gZnByaW50KCl7CiAgICAgICAgQTo6aGVsbG8oKTsKICAgICAgICBCOjpvaygpOwogICAgfSAgIAp9Cgokb2JqID0gbmV3IEI7CiRvYmotPmZwcmludCgpOwo/Pg==