Comparison between PHP7 and PHP8, from syntax to performance; What has changed in PHP8?; Frameworks on the market that already support or are compatible with PHP8; Can PHP8 lead the PHP language to the top? Tools required for the course: 1.phpStudio integrated environment: //m.sbmmt.com/xiazai/gongju/1532 (supports php8, dedicated to php Chinese network learning) 2.phpstudy DIY php8 environment: //m.sbmmt.com/phpstudy-471337.html