Yozhef Hisem: How I Learned to Stop Worrying and Loved Static Analysis Tools

Yozhef Hisem, Back-end engineer at MacPaw, during this talk discussed different static analysis tools for PHP:
* PHP Inspections Plugin
* PHPStan
* Code Style
* Deptrac
* and also tools to control dependencies versions

The presentation contains example code and other practical information on static analysis of PHP.

Transcript

1. How I Learned to Stop Worrying and Loved Static Analysis Tools
2. Yozhef Hisem Back-end engineer at MacPaw Say hi github.com/Yozhef linkedin.com/in/yozhef
3. Agreements
4. Static Analysis Tools for today • PHP Inspections Plugin • PHPStan • Code Style • Deptrac • Control dependency version 4
5. Php Inspections 5
6. Deprecated function 6
7. Deprecated function 7
8. Code simplification 8
10. Type analysis 10
12. Unnecessary code 12
14. Micro-optimization 14
15. Php Inspections: can it make worse? 15
16. PHP <= 5.6 16
17. Upgrade to PHP 7 > 17
18. PHPStan 18
19. How many levels are there? 9 8 19
20. Level checking: 0. basic checks
 1. possibly undefined variables
 2. unknown methods checked on all expressions 
 3. return types
 4. basic dead code checking 
 …
 9. report missing typehints 20
21. Bool in checks 21
22. Strict comparisons of type 1 22
23. Search Useless Params 23
24. Search for non-existent functions 24
25. Useless Parameters 25
26. Search Useless Code 26
27. Search Duplicate Operation 27
28. Ignore Errors 28
29. Code Style 29
30. •Prettier php •php-cs-fixed •php code sniffer Tools to watch your code: 30
32. How many PHP Standards Recommendations are there? 19> 19< 32
33. PHP Standards Recommendations Accepted - 13 level
 Draft - 2 level
 Abandoned - 3 level
 Deprecated - 2 level 33
34. PHP Code Sniffer 34
35. Line Length Too Long 35
36. Camel Caps Method Name 36
37. Constants Class constants must be declared in all upper case with underscore separators. 37
38. How to create a custom rule? 38
39. Deptrac 39
40. Code Base Architecture •CQRS •Onion •Hexagonal •Clean 40
41. Onion 41
42. Setting Layers 42
43. Setting Ruleset 43
44. Example of the error 44
45. Control dependency version: 45
46. Control dependency version •GitHub Dependabot •Renovate •Manual 46
47. GitHub Dependabot 47
48. Renovate 48
49. Manual 49
50. How to use the tools in legacy project? 50
52. Any questions?
53. Thank you! Say hi github.com/Yozhef linkedin.com/in/yozhef