# Contributor Guidelines I encourage everyone to contribute to the Slim Framework project. You can find the latest code on GitHub at?[https://github.com/slimphp/Slim](https://github.com/slimphp/Slim). ## Issue Tracker You can find outstanding issues on the?[GitHub Issue Tracker](https://github.com/slimphp/Slim/issues). If you intend to work on a specific issue, leave a comment on the appropriate thread to inform other project contributors. ## Pull Requests * Each pull request should contain only one new feature or improvement. * Pull requests should be submitted to the?`master`?branch ## Code Style All pull requests must use the?[PSR-2](http://www.php-fig.org/psr/psr-2/)?code style. * Code MUST use the?[PSR-1](http://www.php-fig.org/psr/psr-1/)?code style. * Code MUST use 4 spaces for indenting, not tabs. * There MUST NOT be a hard limit on line length; the soft limit MUST be 120 characters; lines SHOULD be 80 characters or less. * There MUST be one blank line after the namespace declaration, and there MUST be one blank line after the block of use declarations. * Opening braces for classes MUST go on the next line, and closing braces MUST go on the next line after the body. * Opening braces for methods MUST go on the next line, and closing braces MUST go on the next line after the body. * Visibility MUST be declared on all properties and methods; abstract and final MUST be declared before the visibility; static MUST be declared after the visibility. * Control structure keywords MUST have one space after them; method and function calls MUST NOT. * Opening braces for control structures MUST go on the same line, and closing braces MUST go on the next line after the body. * Opening parentheses for control structures MUST NOT have a space after them, and closing parentheses for control structures MUST NOT have a space before.