Composer
参考资料
安装
报错日常
/usr/bin/env: php: No such file or directory
增加软链接到你现在的PHP目录
sudo ln -s /usr/local/php /usr/bin/php
centos 安装composer（解决usr/bin/env: php: No such file or directory）_漫步语林-CSDN博客
centos - Composer installed, but get /usr/bin/env: php: No such file or directory - Stack Overflow
但！又报了
/usr/bin/env: ‘php’: Permission denied
根据：
How to Fix /usr/bin/env: ‘php’: Permission denied in Plesk – Mellowhost Blog
Your binary to php is probably being used through redirection like .bashrc file and an alias is hooked for your php command to work. A better way to do this, is to hook the php binary to your PATH variable. 翻译：您的 php 二进制文件可能正在通过重定向使用，如 .bashrc 文件，并且为您的 php 命令工作使用了别名。 更好的方法是将 php 二进制文件挂钩到您的 PATH 变量。
解决[1]：
#切换至root账户
sudo su
#我的PHP路径在：/usr/local/php/bin/
echo "PATH=$PATH:/usr/local/php/bin/" >> .profile
但我还是没有解决这个问题好奇怪😪