Creating a project management system with PHP can be accomplished by following a few key steps:

1. Define the project scope and requirements: Determine the specific features and functionality that you want your project management system to have. This may include creating and managing projects, tasks, deadlines, user roles and permissions, and generating reports.

2. Design the database schema: Create a database schema to store the necessary data for your project management system. This may include tables for projects, tasks, users, roles, and any other relevant entities. Use a tool like MySQL Workbench to visually design the database schema and generate SQL scripts to create the tables.

3. Implement the database functionality: Write PHP code to connect to the database and perform CRUD (Create, Read, Update, Delete) operations on the tables. Use the PDO (PHP Data Objects) extension to securely execute SQL queries and prevent SQL injection vulnerabilities.

4. Design the user interface: Create a user-friendly interface for users to interact with the system. This may include creating forms for adding and editing projects and tasks, displaying lists of projects and tasks, and providing filters and search functionality. Consider using a front-end framework like Bootstrap to make the UI responsive and visually appealing.

5. Implement user authentication and authorization: Develop functionality for user registration, login, and logout. Use password hashing to securely store user passwords in the database. Define user roles and permissions to control access to certain features and data. Apply appropriate access control checks throughout your code to ensure that users can only perform actions they are authorized to.

6. Implement the project management features: Write PHP code to handle the creation, editing, deletion, and listing of projects and tasks. Implement functionality to assign tasks to specific users, set deadlines, and track the progress of tasks. Use appropriate algorithms and data structures to efficiently manage and display the project data.

7. Generate reports: Develop functionality to generate reports based on the project and task data. This may include reports on project progress, task completion rates, and user workload. Use PHP libraries like FPDF or TCPDF to create PDF reports, or use charting libraries like Chart.js or Highcharts to create visual reports.

8. Test and debug: Thoroughly test your project management system to ensure that it functions as expected. Test all the features and scenarios outlined in the requirements. Use debugging tools like Xdebug or the built-in PHP error reporting to identify and fix any bugs or issues.

9. Deploy and maintain: Once your project management system is complete, deploy it to a production server and make it available for users to access. Regularly maintain and update the system to fix bugs, improve performance, and add new features based on user feedback and evolving requirements.