<?php
header("Content-type:text/html;charset=utf8");
interface employee
{
public function working();
}
class teacher implements employee
{
public function working()
{
echo '教书';
}
}
class coder implements employee
{
public function working()
{
echo '敲代码';
}
}
function doprint(employee $i)
{
$i->working();
}
$a = new teacher();
$b = new coder();
doprint($a);
echo '<br>';
doprint($b);
echo '本方法需要重载才能运行';
}
}
class teacher extends employee
{
public function working()
{
echo '教书';
}
}
class coder extends employee
{
public function working()
{
echo '敲代码';
}
}
function doprint($obj)
{
if (get_class($obj) == 'employee') {
echo 'Error';
} else {
$obj->working();
}
}
doprint(new teacher());
echo '<br>';
doprint(new coder());
echo '<br>';
doprint(new employee());
