PSR-12 is a set of coding guidelines for PHP, published by the PHP Framework Interoperability Group (PHP-FIG). It is an extension of the PSR-1 basic coding standard, and provides additional guidelines for writing clean, organized, and maintainable PHP code.
Some of the key guidelines in PSR-12 include:
- Use spaces, not tabs, for indentation
- Use camelCase for variable and function names
- Use snake_case for constants and file names
- Use meaningful, descriptive names for variables, functions, and constants
- Use proper documentation blocks for functions and classes
- Use strict comparison operators (
!==) instead of loose comparison operators (
- Use PHP 7.0 syntax and features, where possible
Adhering to these guidelines can help make your PHP code more consistent and easier to read and understand for other developers.