Can you explain what PSR standards are in PHP and why they are needed?

PSR (PHP Standards Recommendations) is a set of standards and guidelines developed by PHP-FIG (PHP Framework Interop Group) to ensure consistency in PHP project code.

Why PSRs are needed:

• Improve code readability and maintainability.
• Ensure compatibility between different libraries and frameworks.
• Simplify teamwork and integration.

Examples of popular PSR standards:

• PSR-1: Basic coding standards.
• PSR-2: Coding style (indents, spaces, braces).
• PSR-4: Autoloading classes.

Using PSRs helps create clean, understandable, and maintainable code, which is especially important in large projects and team work.