From 6d4728b2a5e0ccaffe8da13da745df3ac22294bd Mon Sep 17 00:00:00 2001
From: Abdul Malik Ikhsan <samsonasik@gmail.com>
Date: Thu, 18 Jun 2026 19:38:14 +0700
Subject: [PATCH 1/2] [CodeQuality] Skip native function on
 MoveInnerFunctionToTopLevelRector

---
 .../skip_redefine_native_function.php.inc     | 20 +++++++++++++++++++
 .../MoveInnerFunctionToTopLevelRector.php     | 17 ++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 rules-tests/CodeQuality/Rector/StmtsAwareInterface/MoveInnerFunctionToTopLevelRector/Fixture/skip_redefine_native_function.php.inc

diff --git a/rules-tests/CodeQuality/Rector/StmtsAwareInterface/MoveInnerFunctionToTopLevelRector/Fixture/skip_redefine_native_function.php.inc b/rules-tests/CodeQuality/Rector/StmtsAwareInterface/MoveInnerFunctionToTopLevelRector/Fixture/skip_redefine_native_function.php.inc
new file mode 100644
index 00000000000..e824ba74649
--- /dev/null
+++ b/rules-tests/CodeQuality/Rector/StmtsAwareInterface/MoveInnerFunctionToTopLevelRector/Fixture/skip_redefine_native_function.php.inc
@@ -0,0 +1,20 @@
+<?php
+
+namespace Rector\Tests\CodeQuality\Rector\StmtsAwareInterface\MoveInnerFunctionToTopLevelRector\Fixture;
+
+function SkipRedefineNativeFunction(): void
+{
+    function strlen(): int
+    {
+        return 1;
+    }
+
+    echo strlen();
+}
+
+function bar()
+{
+    echo strlen('abc');
+}
+
+bar();
\ No newline at end of file
diff --git a/rules/CodeQuality/Rector/StmtsAwareInterface/MoveInnerFunctionToTopLevelRector.php b/rules/CodeQuality/Rector/StmtsAwareInterface/MoveInnerFunctionToTopLevelRector.php
index 065d1e7770f..8c85c3b68e5 100644
--- a/rules/CodeQuality/Rector/StmtsAwareInterface/MoveInnerFunctionToTopLevelRector.php
+++ b/rules/CodeQuality/Rector/StmtsAwareInterface/MoveInnerFunctionToTopLevelRector.php
@@ -5,7 +5,10 @@
 namespace Rector\CodeQuality\Rector\StmtsAwareInterface;
 
 use PhpParser\Node;
+use PhpParser\Node\Name;
 use PhpParser\Node\Stmt\Function_;
+use PHPStan\Reflection\Native\NativeFunctionReflection;
+use PHPStan\Reflection\ReflectionProvider;
 use Rector\PhpParser\Enum\NodeGroup;
 use Rector\Rector\AbstractRector;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
@@ -16,6 +19,12 @@
  */
 final class MoveInnerFunctionToTopLevelRector extends AbstractRector
 {
+    public function __construct(
+        private readonly ReflectionProvider $reflectionProvider
+    ) {
+
+    }
+
     public function getRuleDefinition(): RuleDefinition
     {
         return new RuleDefinition(
@@ -126,6 +135,7 @@ private function extractInnerFunctions(Function_ $outerFunction, array $siblingS
      */
     private function hasSiblingFunctionOfSameName(Function_ $innerFunction, array $siblingStmts): bool
     {
+        $innerFunctionName = new Name($innerFunction->name->toString());
         foreach ($siblingStmts as $siblingStmt) {
             if (! $siblingStmt instanceof Function_) {
                 continue;
@@ -134,6 +144,13 @@ private function hasSiblingFunctionOfSameName(Function_ $innerFunction, array $s
             if ($this->nodeNameResolver->areNamesEqual($siblingStmt, $innerFunction)) {
                 return true;
             }
+
+            if ($this->reflectionProvider->hasFunction($innerFunctionName, null)) {
+                $functionReflection = $this->reflectionProvider->getFunction($innerFunctionName, null);
+                if ($functionReflection instanceof NativeFunctionReflection) {
+                    return true;
+                }
+            }
         }
 
         return false;

From 2b2aa4304d875621b9cb87a0871bb7b3b9507684 Mon Sep 17 00:00:00 2001
From: Abdul Malik Ikhsan <samsonasik@gmail.com>
Date: Thu, 18 Jun 2026 19:39:22 +0700
Subject: [PATCH 2/2] eol

---
 .../Fixture/skip_redefine_native_function.php.inc               | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rules-tests/CodeQuality/Rector/StmtsAwareInterface/MoveInnerFunctionToTopLevelRector/Fixture/skip_redefine_native_function.php.inc b/rules-tests/CodeQuality/Rector/StmtsAwareInterface/MoveInnerFunctionToTopLevelRector/Fixture/skip_redefine_native_function.php.inc
index e824ba74649..b998f9c2b88 100644
--- a/rules-tests/CodeQuality/Rector/StmtsAwareInterface/MoveInnerFunctionToTopLevelRector/Fixture/skip_redefine_native_function.php.inc
+++ b/rules-tests/CodeQuality/Rector/StmtsAwareInterface/MoveInnerFunctionToTopLevelRector/Fixture/skip_redefine_native_function.php.inc
@@ -17,4 +17,4 @@ function bar()
     echo strlen('abc');
 }
 
-bar();
\ No newline at end of file
+bar();