Improvements 🔧

• Apply finally scope changes to try-catch exit points and check by-ref return types after finally (#6393), [#13338]
• Fix PHP 8.6 deprecation in hoa/consistency (#6405), thanks @SanderMuller!

Bugfixes 🐛

• Compare conditional expressions in MutatingScope::equals() (#6344), [#15157], thanks @janedbal!
• Fix containsNull() for union with null&T of mixed (#6390), thanks @vojtech-dobes!
• Do not resolve include paths through a stream wrapper that is not registered (#6397), [#15192]
• Do not treat mixed type arguments as compatible both ways when both generic types are parameterized (#6398), [#15198]
• Fix union of template array-key with false losing the template (#6376), [#13374], [#13192], [#10871], [#8268], [#7423], [#7279], [#7049], thanks @calebdw!
• Fix false positive comparing identical generic types below level 8 (#6392), [#13876], [#12984], [#12008], [#11041], [#10698], [#9377], [#9096], thanks @calebdw!
• pcntl_exec() is not supported by blackfire (#6409), thanks @staabm!
• UsedNamesRule: reset imported names at every namespace declaration instead of keying them by namespace name (#6413), [#15215]
• Derive per-arm conditional expressions from overlapping ternary arm types (#6381), [#7905]
• Record needle-implies-true conditional expression for in_array() assignments (#6381), [#9752]
• Propagate conditional expressions through derived assignments (#6381), [#13054]
• Do not report ?? null / ??= null as unnecessary when evaluating the right side has side effects (#6418), [#15134], thanks @VincentLanglet and @staabm!

Performance 🏎️

• Reduce repeated work when matching ignored errors (#6374), thanks @zonuexe!
• Do not look up class reflection for properties without hooks (#6396)
• Share the directory walk between the analyse and the scan file finder (#6396)
• Read the exported PHPDoc scope off the AST instead of through FileTypeMapper (#6396)
• Memoize ClassReflection::getName() (#6406)
• Inline single-return getters when building the PHAR (#6406, #6412)
• Remove a union of values from a set in one pass (#6427)
• Key types by their value where describe() was standing in for it (#6427)
• Answer reflection cache misses without a failing include() (#6430)

Function signature fixes 🤖

• Locale::getPrimaryLanguage() can return empty string (#6400), thanks @BenMorel!

Internals 🔍

• Fix PHPUnit warning (#6375), thanks @staabm!
• Trust PHPStan's own types when running from a source checkout too (#6406)
• Build the macOS turbo extension for arm64 only (#6407)