Read more about this release in a feature article on PHPStan's blog »

Major new features 🚀

Static reflection

Less configuration needed. PHPStan no longer needs autoloading configuration setup, it works out of the box in most situations. Check out Discovering Symbols guide in the documentation for more details.
- Introduced new related configuration options scanFiles, and scanDirectories. Deprecated autoload_files, and autoload_directories.
It's now possible to analyse files that mix class/function declarations and side-effects.

Improvements 🔧

ConstantStringType - mark values coming from ::class constant explicitly, for performance reasons (phpstan/phpstan-src@9814ab0), #3054, #3193, #1275
Limit size of ConstantArrayType coming from literal array (phpstan/phpstan-src@8527777), #3055, #1275
Inherit PHPDocs from internal classes (phpstan/phpstan-src@e686505), #1802, #1682, #2445
Option checkExplicitMixed that will eventually become level 9 (phpstan/phpstan-src@da0b2eb)
Used memory will be printed with -v (phpstan/phpstan-src@a90b290)
Update nikic/php-parser to 4.5.0 (phpstan/phpstan-src@876d146)
Don't merge deprecated tag with parents (#225), thanks @ossinkine!

Add LIBXML_VERSION & LIBXML_DOTTED_VERSION dynamic constants (#203), thanks @schlessera!
NodeScopeResolver - fix processing args in New_ (phpstan/phpstan-src@9b62d91)
FileReader - assert is_file() before reading (phpstan/phpstan-src@9fd30bf), #3304
Do not analyse trait method that's shadowed in the using class (phpstan/phpstan-src@a2044e6), #2935
Fix yield from return type (#207), thanks @enumag!
FileAnalyser - fixed unignorable errors that were thrown away (phpstan/phpstan-src@7dc1de3)
Generics: fix isSuperTypeOf implementations (#206), thanks @hrach!
OptimizedSingleFileSourceLocator - fix const handling (phpstan/phpstan-src@6204ebe), #2868
get_class extension: fix support for generics (#209), #3263, thanks @hrach!
Always accept isset($array[$string]) (#214), thanks @nobuf!
InstanceOf: fix uncertainty (#211), thanks @hrach!
IncompatibleDefaultParameterTypeRule - fix analysed functions with reflection from different place (phpstan/phpstan-src@50915ce), #3349
Check default property value against native type (phpstan/phpstan-src@4329b07)
Default value property type does not observe strict types - it's always strict (phpstan/phpstan-src@fe72e26)

Fix mb_convert_encoding() (#213), thanks @marcu87!
Added stubs for SplDoublyLinkedList, SplQueue and SplPriorityQueue (#205), thanks @dktapps!
PDO stub - add missing constants (phpstan/phpstan-src@3734c3f), #2883
Fix return values for date_parse() (#217), thanks @cxj!
DynamicReturnType for array search call not strict (#215), thanks @VincentLanglet!
Fix some SplFileObject signature (#220), thanks @VincentLanglet!
Make toArray() return list in ext-ds (#221), thanks @simPod!
Fix sapi_windows_set_ctrl_handler signature (#224), thanks @Seldaek!
Fix signature of XSLTProcessor::transformToXml (#226), thanks @czjvic!