[TypeDeclarationDocblocks] Use mixed[] over mixed on unserialize() call on ClassMethodArrayDocblockParamFromLocalCallsRector

rules-tests/TypeDeclarationDocblocks/Rector/Class_/ClassMethodArrayDocblockParamFromLocalCallsRector/Fixture/mixed_from_unserialize.php.inc

@@ -0,0 +1,40 @@
+<?php
+
+namespace Rector\Tests\TypeDeclarationDocblocks\Rector\Class_\ClassMethodArrayDocblockParamFromLocalCallsRector\Fixture;
+
+class MixedFromUnserialize
+{
+    public function run(string $param)
+    {
+        $this->doStuff(unserialize($param));
+    }
+
+    private function doStuff(array $value)
+    {
+        // do stuff with value
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\TypeDeclarationDocblocks\Rector\Class_\ClassMethodArrayDocblockParamFromLocalCallsRector\Fixture;
+
+class MixedFromUnserialize
+{
+    public function run(string $param)
+    {
+        $this->doStuff(unserialize($param));
+    }
+
+    /**
+     * @param mixed[] $value
+     */
+    private function doStuff(array $value)
+    {
+        // do stuff with value
+    }
+}
+
+?>

rules/TypeDeclaration/NodeAnalyzer/ReturnTypeAnalyzer/StrictReturnNewAnalyzer.php

@@ -4,6 +4,7 @@
 
 namespace Rector\TypeDeclaration\NodeAnalyzer\ReturnTypeAnalyzer;
 
+use PHPStan\Type\ObjectWithoutClassType;
 use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Expr\Closure;
 use PhpParser\Node\Expr\New_;
@@ -53,7 +54,7 @@ public function matchAlwaysReturnVariableNew(ClassMethod|Function_ $functionLike
             }
 
             $returnType = $this->nodeTypeResolver->getNativeType($return->expr);
-            if ($returnType instanceof \PHPStan\Type\ObjectWithoutClassType) {
+            if ($returnType instanceof ObjectWithoutClassType) {
                 $alwaysReturnedClassNames[] = 'object';
                 continue;
             }

rules/TypeDeclarationDocblocks/Rector/Class_/ClassMethodArrayDocblockParamFromLocalCallsRector.php

@@ -7,6 +7,8 @@
 use PhpParser\Node;
 use PhpParser\Node\Stmt\Class_;
 use PHPStan\PhpDocParser\Ast\PhpDoc\ParamTagValueNode;
+use PHPStan\PhpDocParser\Ast\Type\ArrayTypeNode;
+use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
 use PHPStan\Type\ArrayType;
 use PHPStan\Type\IntegerType;
 use PHPStan\Type\MixedType;
@@ -132,6 +134,10 @@ public function refactor(Node $node): ?Node
                     $normalizedResolvedParameterType
                 );
 
+                if ($arrayDocTypeNode instanceof IdentifierTypeNode && $arrayDocTypeNode->name === 'mixed') {
+                    $arrayDocTypeNode = new ArrayTypeNode($arrayDocTypeNode);
+                }
+
                 $paramTagValueNode = new ParamTagValueNode($arrayDocTypeNode, false, '$' . $parameterName, '', false);
                 $classMethodPhpDocInfo->addTagValueNode($paramTagValueNode);