如何从命令行运行PHP7。。。？

安装了PHP7。有一个php测试脚本。正在尝试从命令行启动

[root@/php]# vim db_connect.php
[root@/php]# php db_connect.php
The program 'php' is currently not installed. You can install it by typing: apt-get install php5-cli

[root@/php]# php7 db_connect.php
No command 'php7' found, did you mean:

[root@/php]# php-7 db_connect.php
php-7: command not found

[root@/php]# php -v
The program 'php' is currently not installed. You can install it by typing:
apt-get install php5-cli

[root@/php]# apt-get install php7-cli
E: Unable to locate package php7-cli

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使用php7启动的命令是什么？

安装php7.0-cli修复了它

apt-get install php7.0-cli

[root@/php]# php -v
PHP 7.0.5-2+deb.sury.org~trusty+1 (cli) ( NTS )
Copyright (c) 1997-2016 The PHP Group

[root@/php]# php db_connect.php
test
PDO connection object created

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apt get install php5 cli

肯定不会安装php7。请参阅：一旦启动并运行，我建议使用PDO命令而不是db_connect。它有安全问题，你可以在这个网站上找到这个术语。PHP7已经安装了。。。。这就是重点。如何安装最新版本的PHP？