Finding bugs in seconds php limburg

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Static analysis tools like PHPStan and Psalm can find bugs in PHP code within seconds by analyzing code without executing it. PHPStan performs static analysis to detect errors in code syntax and functionality. It has different configuration levels and plugins. Psalm is also a PHP static analysis tool that can lint code, support grandfathering in old code, and add new features to help find bugs.

Finding bugs in seconds
Static analysis in PHP

Who am I
● Gert de Pagter / BackEndTea
● 26 years old
● Work for Ibuildings
● Internship at YourSurprise
● Open Source

Bugs

Bugs

Static
Analysis

Finding bugs in seconds php limburg

Its Not
● Mess detector
● Linter
● Fixer

Syntax
Functionality

Syntax
???
Functionality

Spot the
bug

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

The Tools

PHPStan

Finding bugs in seconds php limburg

PHP Static
Analysis

Ondřej Mirtes

PHPStan
● PHP Static Analysis
● Configuration levels
● Plugins

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Psalm

Finding bugs in seconds php limburg

Vimeo

Psalm
● PHP Static Analysis Linting Machine
● ‘Grandfather’ old code
● New features

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Finding bugs in seconds php limburg

Find me
● twitter.com/backendtea
● github.com/backendtea
● backendtea.com

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Finding bugs in seconds php limburg

1. Finding bugs in seconds Static analysis in PHP

2. Who am I ● Gert de Pagter / BackEndTea ● 26 years old ● Work for Ibuildings ● Internship at YourSurprise ● Open Source

5. Static Analysis

7. Its Not ● Mess detector ● Linter ● Fixer

8. Syntax Functionality

9. Syntax ??? Functionality

10. Spot the bug

21. PHP Static Analysis

22. Ondřej Mirtes

23. PHPStan ● PHP Static Analysis ● Configuration levels ● Plugins

33. Psalm ● PHP Static Analysis Linting Machine ● ‘Grandfather’ old code ● New features

40. Find me ● twitter.com/backendtea ● github.com/backendtea ● backendtea.com

Editor's Notes

#2: Keep calm Breathe Take a sip of water
#3: Keep calm Ibuildings does web development YourSurprise makes personalized gifts OSS: Infection webmozart/assert symfony/polyfill-ctype Not about me
#4: About bugs
#5: By using static analysis
#6: May sound difficult Is not, works like this:
#7: PHP in, errors out
#8: Helps make sure your code is correct
#9: Syntax: Linter Functionality: tests In between
#12: Take a sip of water Give time