Questions about timing php file execution in linux

Scheduled php file execution in linux! In linux, I want to run the following three files in sequence:. php & nbsp; B. php & nbsp; c. php, for example, run. php will run B after two minutes, whether or not it is finished. php, then c. ph: scheduled php file execution in linux!
In linux, I want to regularly execute three files:. php B. php c. php, for example, run. php will run B after two minutes, whether or not it is finished. php, then c. php. how can this problem be solved? Do you want to write sh? which man told me!

Is this correct? :
Php. sh

#! /Bin/bash
/Usr/bin/php a. php
/Usr/bin/php B. php
/Usr/bin/php c. php

# Crontab-e

* *** Sh php. sh
------ Solution --------------------
Reference:

Php. sh

#! /Bin/bash
/Usr/bin/php a. php
Sleep 2
/Usr/bin/php B. php
Sleep 2
/Usr/bin/php c. php


*/5 * php. sh

Sleep 1 m # two minutes