From 8872d1a19868429408b250eb9f87c2b4d4305c0c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9B=BE=E9=9D=92=E5=87=A4?= <2658978250@qq.com>
Date: Tue, 17 May 2022 21:08:54 +0800
Subject: [PATCH] tijiao

---
 ...42\345\220\221\345\257\271\350\261\241.md" | 114 ++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 "\346\233\276\351\235\222\345\207\244/20220517-PHP\351\235\242\345\220\221\345\257\271\350\261\241.md"

diff --git "a/\346\233\276\351\235\222\345\207\244/20220517-PHP\351\235\242\345\220\221\345\257\271\350\261\241.md" "b/\346\233\276\351\235\222\345\207\244/20220517-PHP\351\235\242\345\220\221\345\257\271\350\261\241.md"
new file mode 100644
index 0000000..45c428a
--- /dev/null
+++ "b/\346\233\276\351\235\222\345\207\244/20220517-PHP\351\235\242\345\220\221\345\257\271\350\261\241.md"
@@ -0,0 +1,114 @@
+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。                                                                                                                                                                                
+
+   ```php
+   class Car
+   {
+       private $brand;//品牌
+      private $price;//价格
+   
+        function __construct($brand,$price){
+           $this->brand=$brand;
+           $this->price=$price;
+       }
+   
+       /**
+        * @return mixed
+        */
+       public function getBrand()
+       {
+           return $this->brand;
+       }
+   
+       /**
+        * @param mixed $brand
+        */
+       public function setBrand($brand)
+       {
+           $this->brand = $brand;
+       }
+   
+       /**
+        * @return mixed
+        */
+       public function getPrice()
+       {
+           return $this->price;
+       }
+   
+       /**
+        * @param mixed $price
+        */
+       public function setPrice($price)
+       {
+           $this->price = $price;
+       }
+       function show(){
+           echo "这是价格为".$this->price."的".$this->brand;
+       }
+   }
+   
+   $car =new Car("宝马",5000000);
+   $car->show();
+   echo "<hr>";
+   
+   ```
+
+2. 在上例的基础上为汽车类定义一个子类--跑车类。为子类实例化对象并访问父类的属性。
+
+   ```php
+   class Sportscar extends Car {
+   
+       function __construct($brand, $price)
+       {
+           parent::__construct($brand, $price);
+       }
+   
+       function show1(){
+           echo "，它的颜色为白色。";
+       }
+   
+   
+   
+   }
+   
+   $a = new Sportscar("比亚迪","200000");
+   $a->show();
+   $a->show1();
+   echo "<hr>";
+   ```
+
+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。
+
+   ```php
+   class a{
+   
+   // 3个公共的属性和方法
+      public $a;
+      public $b;
+      public $c;
+       public function a(){}
+       public function b(){}
+       public function c(){}
+   
+   // 3个受保护的属性和方法
+       protected $a1;
+       protected $b1;
+       protected $c1;
+       protected  function a1(){}
+       protected  function b1(){}
+       protected  function c1(){}
+   
+   
+   // 3个私有属性和方法
+       private $a2;
+       private $b2;
+       private $c2;
+       private function a2(){}
+       private function b2(){}
+       private function c3(){}
+       
+   
+   }
+   
+   ```
+
-- 
Gitee