You are running Composer with SSL/TLS protection disabled.

php  運行compose  老是出現：You are running Composer with SSL/TLS protection disabled.

解決辦法：

　　執行：composer config -g -- disable-tls false

 

參考地址：https://blog.csdn.net/xcxizz/article/details/52461633

 升級composer

cmd: composer -v  查看當前composer 版本

執行：

　　　　$ composer selfupdate
　　　　Updating to version 1.7.0 (stable channel).
　　　　Downloading: 100%
　　　　Use composer self-update --rollback to return to version 1.2.1