Static Analysis & Strict Types

Dive deep into your code bases and add strict typing to leverage static analysis tools that can help find bugs in your code before it’s even run! We’ll explore Phan and PhpStan, both fantastic static analysis tools that can give detailed introspection into our applications. Static Analyzers can help find overly complicated logic and other common issues in our code bases as well as ensure our data types are standardized across our application processing.

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1. Static Analysis & Strict Types Joe Ferguson
2. Who Am I? Joe Ferguson Senior Full Stack Developer @ Preteckt Twitter: @JoePFerguson OSMI Board Member The Joindin Foundation & Joindin Leadership Team
3. Agenda Review a basic PHP package Discuss Static Analysis and demo tools Demo tools on a real world application Add some new(ish) PHP 7.x features to improve analysis results
4. PHP-Easy-Math Simple example Addition Class Subtraction Class All methods unit tested
5. Shameless Plug phparch.com/article/artisinal-producing-packages-part-one/ Artisinal: Producing Packages, Part One
6. Composer.json composer.json
7. \EasyMath\Addition src/Addition.php
8. \EasyMath\Subtraction src/Subtraction.php
9. \EasyMath\Tests\AdditionTest src/tests/AdditionTest.php
10. \EasyMath\Tests\SubtractionTest src/tests/SubtractionTest.php
11. Static Analysis
12. Phan
13. Installing Phan
14. Auto Configuring Phan php vendor/bin/phan --init --init-level=1 --init-overwrite
15. Manually Configuring Phan .phan/config.php
16. Running Phan php vendor/bin/phan
17. Running Phan php vendor/bin/phan
18. Understanding Phan https://github.com/phan/phan/wiki/Issue-Types-Caught-by-Phan
19. \EasyMath\Tests\AdditionTest src/tests/AdditionTest.php
20. Manually Configuring Phan .phan/config.php php ./vendor/bin/phan
21. Real World App
22. Running Phan
23. Incrementally Strengthening Analysis
24. Manually Configuring Phan .phan/config.php
25. Running Phan
26. We expected a bit more output…
27. PHPStan
28. Installing PHPStan
29. Configuring PHPStan phpstan.neon
30. Running PHPStan php ./vendor/bin/phpstan analyse —level 0
31. PSR-4 Autoloading composer.json
32. Running PHPStan php ./vendor/bin/phpstan analyse —level 0
33. Running PHPStan php ./vendor/bin/phpstan analyse —level 5
34. Running PHPStan php ./vendor/bin/phpstan analyse —level max
35. Back to the real world phpstan.neon
36. Back to the real world php ./vendor/bin/phpstan analyse —level 0
37. Extending PHPStan https://github.com/phpstan/phpstan
38. larastan https://github.com/nunomaduro/larastan
39. Installing larastan composer require --dev nunomaduro/larastan
40. Running larastan php artisan code:analyse
41. Improving the Quality of Static Analysis
42. Documenting Our Code src/Addition.php
43. Running Phan ./vendor/bin/phan PhanTypeMismatchDeclaredReturn Doc-block of add contains declared return type float which is incompatible with the return type int declared in the signature
44. Running PHPStan ./vendor/bin/phpstan analyse --level max
45. Documenting Our Code src/Addition.php
46. Running Phan ./vendor/bin/phan
47. Running PHPStan ./vendor/bin/phpstan analyse --level max
48. Real Time Analysis https://plugins.jetbrains.com/plugin/7622-php-inspections-ea-extended-
49. Php Inspections (EA Extended) https://plugins.jetbrains.com/plugin/7622-php-inspections-ea-extended-
50. Php Inspections (EA Extended) https://plugins.jetbrains.com/plugin/7622-php-inspections-ea-extended-
51. Php Inspections (EA Extended) https://plugins.jetbrains.com/plugin/7622-php-inspections-ea-extended-
52. Php Inspections (EA Extended) https://plugins.jetbrains.com/plugin/7622-php-inspections-ea-extended-
53. Php Inspections (EA Extended) https://plugins.jetbrains.com/plugin/7622-php-inspections-ea-extended-
54. Php Inspections (EA Extended) https://plugins.jetbrains.com/plugin/7622-php-inspections-ea-extended-
55. Php Inspections (EA Extended) https://plugins.jetbrains.com/plugin/7622-php-inspections-ea-extended-
56. Php Inspections (EA Extended) https://plugins.jetbrains.com/plugin/7622-php-inspections-ea-extended-
57. Resources The Workshop: The Road to 7.3 https://www.phparch.com/magazine/2019/01/ devops-depths/ Phan https://github.com/phan/phan PHPStan https://github.com/phpstan/phpstan
58. Joe Ferguson Twitter: @JoePFerguson Email: joe@joeferguson.me Contact Info: