Set up a virtual host to 'help me execute a certain program at a fixed time every day'?

I would like to ask
I am buying a virtual space (bluehost)
I would like to ask how to set up the host to "fix a time every day to help me execute a certain program"?
For example, I use phpmailer to send emails~
I want to set it up to automatically send emails to every user in the mysql database at "3pm every day"
But how to "set it up"?

Reply content:

I would like to ask
I am buying a virtual space (bluehost)
I would like to ask how to set up the host to "fix a time every day to help me execute a certain program"?
For example, I use phpmailer to send emails~
I want to set it up to automatically send emails to every user in the mysql database at "3pm every day"
But how to "set it up"?

I don’t know if bluehost can crontab, if so

Basic format of crontab:
　　　　*　command
minute hour day month week command

The 1st column represents minutes 1 to 59. Each minute is represented by or /1.
The 2nd column represents hours 1 to 23 (0 represents 0 o'clock).
The 3rd column represents days 1 to 31.
The 4th column represents months 1 to 31. 12
The identification number in column 5 is weekday 0~6 (0 means Sunday)
The command to be run in column 6

"Every day at three o'clock in the afternoon" automatically send a letter to every user in the mysql database
*　15　*　　*　*　/usr/bin/php phpmailer

If it is linux then use crontab

Consult customer service and tell him that you need to do a planning task. You first write the corresponding business as the interface address.

Use scheduled tasks. If it is a server, you can use workerman