<?php
class foo
{
public function p()
{
}
// everyone can use
private function p2()
{
}
// only class foo may use internally
protected function p3()
{
}
}
class foo_ex extends foo
{
function foo_ex()
{
$this->p2();
}
}
$a = new foo();
$a->p3();
// fatal error
$b = new foo_ex();
// will fail with fatal error