例一：
復制代碼 代碼如下:
<?php
// 類的定義
class User
{
// 屬性,注意public、private、protected的作用范圍
public $name = "hackbaby";
// 構造函數
function __construct()
{
echo "construct<br />";
}
// 方法
function say()
{
echo "這是在類的本身調用：$this->name";
}
// 析構函數
function __destruct()
{
echo "destruct";
}
// 返回當前對象的描述信息 通過實例化的變量名調用例如本例中的$user
function __toString()
{
return "user class";
}
}
//實例化，如果構造函數有參數則用$user = new User('參數');
$user = new User();
echo $user->name . "<hr />";
$user->say();
echo "<hr />";
echo $user;
?>
例二：
復制代碼 代碼如下:
<?php
class Fruit
{
protected $fruit_color;
protected $fruit_size;
function setcolor($color)
{
$this->fruit_color = $color;
}
function getcolor()
{
return $this->fruit_color;
}
function setsize($size)
{
$this->fruit_size = $size;
}
function getsize()
{
return $this->fruit_size;
}
function save()
{
//代碼
}
}
class apple extends Fruit
{
private $variety;
function setvariety($type)
{
$this->variety = $type;
}
function getvariety()
{
return $this->variety;
}
}
$apple = new apple();
echo $apple->setvariety('紅富士');
echo $apple->getvariety();
echo "<br />";
echo $apple->setcolor('red');
echo $apple->getcolor();
echo "<br />";
echo $apple->setsize('特大');
echo $apple->getsize();
?>
