php7升级到php8

升级步骤

1. 下载PHP8 官网网站
2. 创建配置文件，将文件php.ini-development该为php.ini
3. 开启PHP扩展
   1. 将;extension_dir = "ext"该成extension_dir = "c:/web/php8.1/ext"
   2. 取消下面注释

   extension=curl
   extension=mbstring
   extension=openssl
   # 下面是连接数据库
   extension=mysql
   extension=pdo_mysql
   

4. 在Apache中修改PHP模块

   LoadModule php7_module "E:/web/php7.4/php7apache2_4.dll"
   PHPIniDir "E:/web/php7.4"
   AddType application/x-httpd-php .php
   

   更改为

   LoadModule php_module "E:/web/php8.0/php8apache2_4.dll"
   PHPIniDir "E:/web/php8.0"
   AddType application/x-httpd-php .php
   

5. 重新安装 composer

composer指令

# 版本升级到最新
composer self-update
# 诊断命令
composer diagnose
# 清除缓存
composer clear
# 阿里云 Composer 全量镜像
composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/
# 取消配置
composer config -g --unset repos.packagist</pre>

各种坑

• 解决Composer Installing dependencies from lock file

  composer install --ignore-platform-reqs
  或者
  composer update --ignore-platform-reqs</pre>