php实例-继承

<?php
class person{
public $name = 'Tom';
public $gender;
static $money = 1000;
public function __construct(){
echo'这里是父类',php_eol;
}
public function say(){
echo $this->name,"\t is",$this->gender,"\r\n";
}
}
class family extends person{
public $name;
public $gender;
public $age;
static $money=100000;
public function __construct(){
parent::__construct();
echo'这里是子类',php_eol;
}

public function say(){
parent::say();
echo $this->name,"\t is \t",$this->gender,",and is\t",$this->age,php_eol;
}
public function cry(){
echo parent::$money,php_eol;
echo '%>_<%',php_eol;
echo self::$money,php_eol;
echo '(*^_^*)';
}
}

$poor= new family();
$poor->name='Lee';
$poor->gender='female';
$poor->age=25;
$poor->say();
$poor->cry();
?>