[CodeQuality] Fixes #4578 Skip ForToForeachRector on complex init (#4579)

rules/code-quality/src/Rector/For_/ForToForeachRector.php

@@ -138,6 +138,11 @@ CODE_SAMPLE
             return null;
         }
 
+        $init = $node->init;
+        if (count($init) > 2) {
+            return null;
+        }
+
         $iteratedVariableSingle = $this->inflector->singularize($iteratedVariable);
         $foreach = $this->createForeach($node, $iteratedVariableSingle);
 

rules/code-quality/tests/Rector/For_/ForToForeachRector/Fixture/skip_complex_init.php.inc

@@ -0,0 +1,23 @@
+<?php
+
+namespace Rector\CodeQuality\Tests\Rector\For_\ForToForeachRector\Fixture;
+
+class SkipComplexAssignmentInInit
+{
+    public function run($tokens)
+    {
+        $o = new class {
+            public function getResult()
+            {
+                return ['a'];
+            }
+        };
+
+        for ($i = 0, $query = $o->getResult(), $c = count($query); $i < $c; $i ++)
+        {
+            echo $query[$i];
+        }
+    }
+}
+
+?>