From 4c04e9d352263799b58eeb61e41ff16b8113478a Mon Sep 17 00:00:00 2001
From: pengshiyu <1940607002@qq.com>
Date: Fri, 15 Apr 2022 10:25:53 +0800
Subject: [PATCH] fix

---
 blog/php-basic/index.md         |  10 ++--
 blog/php-mysql/sql-procedure.md | 102 +++++++++++++++++++++++++++++++-
 doc/javascript.md               |   2 +
 3 files changed, 108 insertions(+), 6 deletions(-)

diff --git a/blog/php-basic/index.md b/blog/php-basic/index.md
index 7eb4eec..607ec40 100644
--- a/blog/php-basic/index.md
+++ b/blog/php-basic/index.md
@@ -2,15 +2,15 @@
 
 视频地址：[https://www.bilibili.com/video/BV18x411H7qD](https://www.bilibili.com/video/BV18x411H7qD)
 
-[PHP 基础](blog/php-basic/basic.md)
+1. [PHP 基础](blog/php-basic/basic.md)
 
-[PHP 环境配置](blog/php-basic/environment.md)
+2. [PHP 环境配置](blog/php-basic/environment.md)
 
-[PHP 变量和常量](blog/php-basic/variable.md)
+3. [PHP 变量和常量](blog/php-basic/variable.md)
 
-[PHP 数据类型](blog/php-basic/type.md)
+4. [PHP 数据类型](blog/php-basic/type.md)
 
-[PHP 运算符 operator](blog/php-basic/operator.md)
+5. [PHP 运算符 operator](blog/php-basic/operator.md)
 
 [PHP 流程控制](blog/php-basic/process.md)
 
diff --git a/blog/php-mysql/sql-procedure.md b/blog/php-mysql/sql-procedure.md
index 373b735..b6fd330 100644
--- a/blog/php-mysql/sql-procedure.md
+++ b/blog/php-mysql/sql-procedure.md
@@ -108,4 +108,104 @@ call my_pro2();
 drop procedure 过程名;
 ```
 
-https://www.bilibili.com/video/BV1Vx411g7uJ?p=74&spm_id_from=pageDriver
+## 3、存储过程的形参类型
+
+存储过程的参数和函数一样，需要制定其类型
+
+但是存储过程对参数还有额外的要求，自己的参数分类
+
+- in：（值传递）参数从外部传入，在过程内部使用，可以是直接数据，也可以是保存数据的变量
+
+- out：（引用传递）参数在过程中赋值，传入必须是变量，如果有外部数据，会被清空为null
+
+- inout：（引用传递）数据可以从外部传入过程内部使用，同时内部操作之后，又回将数据返回给外部
+
+代码示例
+
+```sql
+-- 创建3个会话变量
+set @var1 = 1;
+set @var2 = 2;
+set @var3 = 3;
+
+-- 查询会话变量
+select @var1, @var2, @var3;
++-------+-------+-------+
+| @var1 | @var2 | @var3 |
++-------+-------+-------+
+|     1 |     2 |     3 |
++-------+-------+-------+
+1 row in set (0.00 sec)
+
+
+
+-- 修改语句结束符
+delimiter $$
+
+-- 定义过程
+create procedure my_pro3(in a int, out b int, inout c int)
+begin
+    -- 查看传入的3个数据值
+    select a, b, c;
+    -- +------+------+------+
+    -- | a    | b    | c    |
+    -- +------+------+------+
+    -- |    1 | NULL |    3 |
+    -- +------+------+------+
+
+    -- 修改3个变量值
+    set a = 10;
+    set b = 20;
+    set c = 30;
+
+    select a, b, c;
+    -- +------+------+------+
+    -- | a    | b    | c    |
+    -- +------+------+------+
+    -- |   10 |   20 |   30 |
+    -- +------+------+------+
+
+    -- 查看会话变量
+    select @var1, @var2, @var3;
+    -- +-------+-------+-------+
+    -- | @var1 | @var2 | @var3 |
+    -- +-------+-------+-------+
+    -- |     1 |     2 |     3 |
+    -- +-------+-------+-------+
+
+    -- 修改会话变量
+    set @var1 = 'a';
+    set @var2 = 'b';
+    set @var3 = 'c';
+
+    select @var1, @var2, @var3;
+    -- +-------+-------+-------+
+    -- | @var1 | @var2 | @var3 |
+    -- +-------+-------+-------+
+    -- | a     | b     | c     |
+    -- +-------+-------+-------+
+end
+$$
+
+delimiter ;
+
+-- 调用过程
+call my_pro3(@var1, @var2, @var3);
+
+-- 再次查看会话变量
+mysql> select @var1, @var2, @var3;
++-------+-------+-------+
+| @var1 | @var2 | @var3 |
++-------+-------+-------+
+| a     |    20 |    30 |
++-------+-------+-------+
+```
+
+分析：
+
+1、实参传入过程之后，实际上没有改变外部变量的值，而是把值给了形参，out类型不能接收外部变量的值，默认为null
+
+2、当过程执行到end 的时候，如果是out或inout变量，会将形参的值重新赋值给实参变量
+
+
+https://www.bilibili.com/video/BV1Vx411g7uJ?p=75&spm_id_from=pageDriver
\ No newline at end of file
diff --git a/doc/javascript.md b/doc/javascript.md
index 959f08f..7896fbf 100644
--- a/doc/javascript.md
+++ b/doc/javascript.md
@@ -83,6 +83,8 @@
 
 [ScrollReveal](https://scrollrevealjs.org/)
 
+[preactjs](https://preactjs.com/)Fast 3kB alternative to React with the same modern API.
+
 ## CDN
 
 [BootCDN](https://www.bootcdn.cn/): 稳定、快速、免费的前端开源项目 CDN 加速服务
-- 
GitLab