diff --git "a/\346\235\216\347\221\236\351\230\263/20220517-php\351\235\242\345\220\221\345\257\271\350\261\241.md" "b/\346\235\216\347\221\236\351\230\263/20220517-php\351\235\242\345\220\221\345\257\271\350\261\241.md"
new file mode 100644
index 0000000000000000000000000000000000000000..94e34fe814f29f4b6f065fcdab08526afa27629d
--- /dev/null
+++ "b/\346\235\216\347\221\236\351\230\263/20220517-php\351\235\242\345\220\221\345\257\271\350\261\241.md"
@@ -0,0 +1,144 @@
+```php
+<?php
+//1、写一段代码，定义一个汽车类，有品牌与价格两种属性。并为类实例化对象，为对象的属性赋值并引用。
+// 2、在上例的基础上为汽车类定义一个子类——跑车类。为子类实例化对象并访问父类的属性。
+class car{
+    private $brand;
+    private $price;
+}
+
+
+function __construct($brand, $price)
+{
+    $this->brand=$brand;
+    $this->price=$price;
+}
+function show(){
+    echo "品牌".$this->brand."<br>价格为".$this->price;
+}
+/**
+ * @return mixed
+ */
+public function getBrand()
+{
+    return $this->brand;
+}
+
+/**
+ * @param mixed $brand
+ */
+public function setBrand($brand): void
+{
+    $this->brand = $brand;
+}
+
+/**
+ * @param mixed $price
+ * @return car
+ */
+public function setPrice($price)
+{
+    $this->price = $price;
+    return $this;
+}
+
+/**
+ * @return mixed
+ */
+public function getPrice()
+{
+    return $this->price;
+}
+
+}
+$a = new car("兰博基尼",9999999);
+$a->show();
+
+class sportscar extends car{
+    function __construct($brand, $price)
+    {
+        parent::__construct($brand, $price);
+    }
+
+    function run()
+    {
+        echo "名为".parent::getBrand()."的跑车，它车速超越所有车辆，这台超跑的价格为".parent::getPrice();
+    }
+
+
+}
+$b=new sportscar("迈凯伦",1000000000);
+$b->run();
+
+//3、	定义一个类，分别定义3个公共的属性和方法，3个受保护的属性和方法，3个私有属性和方法。
+class lei{
+    var $a;
+    var $b;
+    var $c;
+    protected $d;
+    protected $e;
+    protected $f;
+    private $g;
+    private $h;
+    private $i;
+    /**
+     * @return mixed
+     */public function getG()
+{
+    return $this->g;
+}/**
+ * @param mixed $g
+ */public function setG($g): void
+{
+    $this->g = $g;
+}/**
+ * @return mixed
+ */public function getH()
+{
+    return $this->h;
+}/**
+ * @param mixed $h
+ */public function setH($h): void
+{
+    $this->h = $h;
+}/**
+ * @return mixed
+ */public function getI()
+{
+    return $this->i;
+}/**
+ * @param mixed $i
+ */public function setI($i): void
+{
+    $this->i = $i;
+}
+    function a(){
+
+    }
+    function b(){
+
+    }
+    function c(){
+
+    }
+    protected function d(){
+
+    }
+    protected function e(){
+
+    }
+    protected function f(){
+
+    }
+    private function g(){
+
+    }
+    private function h(){
+
+    }
+    private function i(){
+
+    }
+}
+```
+