From c4b7e3022abadbe80a7d7beaa77ad1aabf810c25 Mon Sep 17 00:00:00 2001
From: tianfenghan <rango@swoole.com>
Date: Tue, 28 Apr 2026 14:33:53 +0800
Subject: [PATCH] =?UTF-8?q?fix(php):=20=E4=BF=AE=E5=A4=8D=E5=87=BD?=
 =?UTF-8?q?=E6=95=B0use=E8=AF=AD=E5=8F=A5=E8=A7=A3=E6=9E=90=E9=97=AE?=
 =?UTF-8?q?=E9=A2=98?=
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- 修正useFunctions映射返回值，确保函数名正确拼接
- 修复use语句类型判断逻辑，处理未知类型情况
- 添加any函数polyfill支持
- 新增函数use测试用例验证功能正确性
---
 examples/error/undef-var.php      |  5 +++++
 src/Php/CompilerBase.php          |  5 +++--
 src/polyfills.php                 |  5 +++++
 tests/aot/namespace/use-func.phpt | 20 ++++++++++++++++++++
 4 files changed, 33 insertions(+), 2 deletions(-)
 create mode 100644 examples/error/undef-var.php
 create mode 100644 tests/aot/namespace/use-func.phpt

diff --git a/examples/error/undef-var.php b/examples/error/undef-var.php
new file mode 100644
index 00000000..89a4c731
--- /dev/null
+++ b/examples/error/undef-var.php
@@ -0,0 +1,5 @@
+<?php
+function main()
+{
+    var_dump($testVar);
+}
\ No newline at end of file
diff --git a/src/Php/CompilerBase.php b/src/Php/CompilerBase.php
index 86c02e99..5bc86f36 100644
--- a/src/Php/CompilerBase.php
+++ b/src/Php/CompilerBase.php
@@ -705,7 +705,7 @@ class CompilerBase extends \PhpAot\Core\Translator
             return ltrim($funcName, '\\');
         }
         if (isset($this->useFunctions[$funcName])) {
-            return $this->useFunctions[$funcName];
+            return $this->useFunctions[$funcName] . '\\' . $funcName;
         }
         return $funcName;
     }
@@ -4679,7 +4679,8 @@ class CompilerBase extends \PhpAot\Core\Translator
         $code = '';
         foreach ($v2->uses as $use) {
             $id = $this->parseIdentifier($use->name);
-            if ($use->type === Node\Stmt\Use_::TYPE_FUNCTION) {
+            $type = $use->type !== Node\Stmt\Use_::TYPE_UNKNOWN ? $use->type : $v2->type;
+            if ($type === Node\Stmt\Use_::TYPE_FUNCTION) {
                 $lastIndex = strrpos($id, '\\');
                 $fn = substr($id, $lastIndex + 1);
                 $ns = substr($id, 0, $lastIndex);
diff --git a/src/polyfills.php b/src/polyfills.php
index b6bc0556..5b72e83b 100644
--- a/src/polyfills.php
+++ b/src/polyfills.php
@@ -43,3 +43,8 @@ function &refval(&$var)
 {
     return $var;
 }
+
+function any(mixed $var): mixed
+{
+    return $var;
+}
\ No newline at end of file
diff --git a/tests/aot/namespace/use-func.phpt b/tests/aot/namespace/use-func.phpt
new file mode 100644
index 00000000..0bd2d322
--- /dev/null
+++ b/tests/aot/namespace/use-func.phpt
@@ -0,0 +1,20 @@
+--TEST--
+use function
+--FILE--
+<?php
+namespace App\Foo {
+    function bar() {
+        var_dump(__FUNCTION__);
+    }
+}
+
+namespace {
+    use function App\Foo\bar;
+    function main()
+    {
+        bar();
+    }
+}
+?>
+--EXPECT--
+string(11) "App\Foo\bar"
\ No newline at end of file