VFS Stream

Leverages PHP's built-in stream wrapper protocol, allowing use of functions like fopen() and file_get_contents() without modification, as noted in its stream wrapper compatibility.

Works with any PHP unit testing framework, including PHPUnit and SimpleTest, making it versatile across different project setups, as highlighted in the key features.

Simulates file systems entirely in memory, eliminating disk I/O overhead and speeding up test execution, aligned with the philosophy of reliable and fast testing.

Prevents accidental file modifications by mocking directories and files, ensuring tests run independently without cleanup issues, as emphasized in the value proposition.