1. Define the requirements of the HRMS system: This includes identifying the features and functionalities required, such as employee database management, leave management, attendance tracking, performance evaluation, and payroll processing.

2. Design the database: Create a database schema with tables to store employee information, leave records, attendance records, performance evaluations, and payroll details.

3. Create the user interface: Develop the front-end of the HRMS system using HTML, CSS, and JavaScript to allow users to interact with the system. Design a user-friendly interface that allows users to easily navigate and perform various functions.

4. Develop the back-end: Use PHP to program the back-end of the HRMS system. Implement the server-side logic for managing employee information, leave management, attendance tracking, performance evaluations, and payroll processing.

5. Implement user authentication: Add a login system to authenticate users and ensure that only authorized personnel can access and use the HRMS system.

6. Create employee database management functionality: Implement the ability to add, view, edit, and delete employee information. Include fields for personal details, employment details, and contact information.

7. Add leave management functionality: Create a system for employees to apply for leave, view their leave balance, and for managers to approve or reject leave requests.

8. Implement attendance tracking: Develop a system to track employee attendance using timestamps or timecards. Calculate and display attendance reports to track the number of days and hours worked by each employee.

9. Include performance evaluation functionality: Build a system for managers to conduct performance evaluations for employees. Allow managers to set goals, track progress, and submit evaluations.

10. Develop payroll processing: Create a system to calculate employee salaries based on attendance records, leave taken, and other factors. Generate pay slips and store payroll history.

11. Implement reporting and analytics: Generate reports and analytics based on employee data, attendance, leave records, performance evaluations, and payroll information. Provide options to export reports in various formats such as PDF or Excel.

12. Test and debug the system: Conduct thorough testing to identify and fix any bugs or issues in the HRMS system. Ensure that all functionalities are working as expected and provide a smooth user experience.

13. Deploy the system: Once the testing and debugging phase is complete, deploy the HRMS system on a server to make it accessible to authorized users. Configure appropriate access controls to ensure data security.

14. Provide ongoing maintenance and support: Continuously monitor the system for any issues or updates. Regularly backup the data and perform regular maintenance tasks to ensure the system’s smooth operation. Provide support to users and address any queries or concerns they may have.