From c59184bed7afbce62ed3932074333d75c1f015ff Mon Sep 17 00:00:00 2001
From: Yurun <admin@yurunsoft.com>
Date: Fri, 3 Jul 2026 16:15:44 +0800
Subject: [PATCH] =?UTF-8?q?fix(compiler):=20=E6=94=AF=E6=8C=81=E6=95=B0?=
 =?UTF-8?q?=E7=BB=84=E5=92=8C=E5=B1=9E=E6=80=A7=E6=95=B0=E7=BB=84=E8=BF=BD?=
 =?UTF-8?q?=E5=8A=A0=E5=90=8C=E6=97=B6=E9=93=BE=E5=BC=8F=E8=B5=8B=E5=80=BC?=
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---
 src/Php/CompilerBase.php                      |  5 +++
 src/Php/Parser/AssignOpTrait.php              |  2 +
 tests/aot/basic/multi-var-assign-chained.phpt | 45 +++++++++++++++++++
 3 files changed, 52 insertions(+)
 create mode 100644 tests/aot/basic/multi-var-assign-chained.phpt

diff --git a/src/Php/CompilerBase.php b/src/Php/CompilerBase.php
index 34957002..bbf507fa 100644
--- a/src/Php/CompilerBase.php
+++ b/src/Php/CompilerBase.php
@@ -2304,6 +2304,11 @@ class CompilerBase extends \PhpAot\Core\Translator implements PropertyAccessCont
 
     protected function detectVarType($var): string
     {
+        // Unwrap ArrayDimFetch to get the underlying variable type;
+        // the dim/index does not affect the base variable's type.
+        if ($var instanceof Expr\ArrayDimFetch) {
+            return $this->detectVarType($var->var);
+        }
         $name = $this->parseIdentifier($var);
         if ($this->isStdContainer($name)) {
             return self::TYPE_ARRAY;
diff --git a/src/Php/Parser/AssignOpTrait.php b/src/Php/Parser/AssignOpTrait.php
index 24661283..efb309fe 100644
--- a/src/Php/Parser/AssignOpTrait.php
+++ b/src/Php/Parser/AssignOpTrait.php
@@ -272,6 +272,8 @@ trait AssignOpTrait
                 return $this->parseStdContainerAssign($left, $right);
             }
             return $this->parseAssignArrayDim($left, $right);
+        } elseif ($this->isArrayDimFetch($left) and $this->isPropertyFetch($left->var)) {
+            return $this->parseAssignPropertyArrayDim($left, $right);
         }
 
         if ($propertyWriteTarget !== null) {
diff --git a/tests/aot/basic/multi-var-assign-chained.phpt b/tests/aot/basic/multi-var-assign-chained.phpt
new file mode 100644
index 00000000..ab8cf6ec
--- /dev/null
+++ b/tests/aot/basic/multi-var-assign-chained.phpt
@@ -0,0 +1,45 @@
+--TEST--
+Chained assignment with array append ([]), property write, and variable write as rvalue inside constructor argument
+--FILE--
+<?php
+class Test2
+{
+    public function __construct($value2)
+    {
+        var_dump($value2);
+    }
+}
+
+class Test
+{
+    public $arr = [];
+
+    public $value;
+
+    public function __construct()
+    {
+        $arr = [0];
+        new Test2($this->arr[] = $arr[] = $this->value = $value = 1);
+        var_dump($this->value, $value, $this->arr, $arr);
+    }
+}
+
+function main()
+{
+    new Test;
+}
+?>
+--EXPECT--
+int(1)
+int(1)
+int(1)
+array(1) {
+  [0]=>
+  int(1)
+}
+array(2) {
+  [0]=>
+  int(0)
+  [1]=>
+  int(1)
+}