Add get_declared_classes() to runtime reflection function check.

src/Rules/Api/RuntimeReflectionFunctionRule.php

@@ -41,6 +41,7 @@ public function processNode(Node $node, Scope $scope): array
 if (!in_array($functionReflection->getName(), [
 'is_a',
 'is_subclass_of',
+'get_declared_classes',
 'class_parents',
 'class_implements',
 'class_uses',

tests/PHPStan/Rules/Api/RuntimeReflectionFunctionRuleTest.php

@@ -39,6 +39,10 @@ public function testRule(): void
 'Function class_uses() is a runtime reflection concept that might not work in PHPStan because it uses fully static reflection engine. Use objects retrieved from ReflectionProvider instead.',
 51,
 ],
+[
+'Function get_declared_classes() is a runtime reflection concept that might not work in PHPStan because it uses fully static reflection engine. Use objects retrieved from ReflectionProvider instead.',
+52,
+],
 ]);
 }
 

tests/PHPStan/Rules/Api/data/runtime-reflection-function.php

@@ -49,6 +49,7 @@ public function doFoo(object $o): void
 $p = class_parents($o);
 $i = class_implements($o);
 $t = class_uses($o);
+$d = get_declared_classes();
 }
 
 }