PHP转换版本5.6到7而不使用export PATH = / usr / local / php5 / bin：$ PATH

I use PHP 5.6.30 and I update into 7.20 but every time I open new terminal tab I've to switch version by using

export PATH=/usr/local/php5/bin:$PATH

Is theier any way to use version 7 withour using this command line ?

write the env var to profile:

vi /etc/profile
export PATH=/usr/local/php7/bin:$PATH

### then
php run.php

or

start script with php7:

/usr/local/php7/bin/php7 run.php