Taking regular backups of a PHP application and its database is crucial for data integrity and disaster recovery. Here are some steps to help you set up backups for your PHP and database:

1. Determine the backup frequency: Decide how often you need to take backups based on the importance and activity level of your application.

2. Create a backup schedule: Set up a schedule using a cron job to automatically initiate backups at the desired frequency. For example, you might choose to run backups daily, weekly, or monthly.

3. Backup the database: Use the appropriate command or tool to create a backup of your database. For MySQL, you can use the `mysqldump` command. For example:

mysqldump -u [username] -p [database_name] > [backup_file.sql]

4. Backup the PHP code: If you have made customizations or modifications to your PHP code, it is important to back it up as well. You can simply copy the PHP files to a backup location or use a version control system like Git.

5. Store backups securely: Choose a secure location to store your backups, such as a remote server or cloud storage. Make sure to set adequate access controls and encryption to protect your backups.

6. Test the backup recovery process: Regularly test your backups by restoring them to ensure they are working correctly. This will help you identify any potential issues ahead of time.

7. Monitor backups: Set up monitoring alerts to notify you if backups fail or encounter any errors. Regularly check the backup logs to ensure backups are running smoothly.

8. Consider off-site backups: It is essential to have an off-site backup in case of a system failure or disaster at your primary location. This can be done by syncing backups to a remote server or using a cloud backup service.

Remember, having a backup strategy is crucial, but equally important is maintaining backups, testing their recovery process, and documenting the backup and recovery procedures.