refactor(php): separate internal constants loading logic

- Extract internal constants loading into dedicated loadInternalConstants method
- Filter out user-defined constants from internal constants array
- Maintain backward compatibility with non-grouped constants format
- Add proper handling of constant groups to prevent runtime state inclusion
- Improve static expansion behavior for compile-time vs runtime constants

phpunit/code/compiler_api/const_decl.php

@@ -0,0 +1,3 @@
+<?php
+
+const AOT_COMPILE_TIME_CONST = 123;

phpunit/src/CompilerBaseApiTest.php

@@ -173,6 +173,46 @@ class CompilerBaseApiTest extends TestCase
         $this->assertSame('ZEND_LONG_MIN', $this->compiler->getConstValue('PHP_INT_MIN'));
     }
 
+    public function testConstDeclarationsAreStaticallyExpanded(): void
+    {
+        $this->compiler->prepareFile($this->fixturePath('const_decl.php'));
+
+        $code = $this->invokeMethod(
+            'parseConstFetch',
+            new \PhpParser\Node\Expr\ConstFetch(new \PhpParser\Node\Name('AOT_COMPILE_TIME_CONST'))
+        );
+
+        $this->assertSame(CompilerBase::CONST_VAR . 'AOT_COMPILE_TIME_CONST', $code);
+    }
+
+    public function testDefineConstantsAreNotStaticallyExpanded(): void
+    {
+        $internalConstants = $this->getPropertyValue('internalConstants');
+        $this->assertArrayHasKey('PHP_VERSION', $internalConstants);
+        $this->assertArrayNotHasKey('ROOT_PATH', $internalConstants);
+
+        $code = $this->invokeMethod(
+            'parseConstFetch',
+            new \PhpParser\Node\Expr\ConstFetch(new \PhpParser\Node\Name('ROOT_PATH'))
+        );
+
+        $this->assertStringStartsWith('php::constant(nullptr, ', $code);
+        $this->assertStringNotContainsString(ROOT_PATH, $code);
+    }
+
+    public function testDynamicallyDefinedConstantsAreNotInternalConstants(): void
+    {
+        $name = 'AOT_USER_DEFINE_' . str_replace('.', '_', uniqid('', true));
+        define($name, 'runtime-value');
+
+        $compiler = CompilerTest::create($this->testDir);
+        $ref = new \ReflectionClass($compiler);
+        $prop = $ref->getProperty('internalConstants');
+        $prop->setAccessible(true);
+
+        $this->assertArrayNotHasKey($name, $prop->getValue($compiler));
+    }
+
     // ========================================================================
     // genAnonClassName
     // ========================================================================

src/Php/Translator.php

@@ -128,7 +128,7 @@ class Translator extends Preprocessor
         // 这样可以确保优先级：命令行 > YAML > 默认值
         $this->internalFunctions = array_flip(get_defined_functions()['internal']);
         unset($this->internalFunctions[self::ENTRY_FUNCTION]);
-        $this->internalConstants = get_defined_constants();
+        $this->internalConstants = $this->loadInternalConstants();
         if ($this->climate->arguments->defined('help')) {
             $this->showUsage();
             exit(0);
@@ -148,6 +148,26 @@ class Translator extends Preprocessor
         $this->detectPlatform();
     }
 
+    protected function loadInternalConstants(): array
+    {
+        $groups = get_defined_constants(true);
+        if (!is_array($groups)) {
+            return get_defined_constants();
+        }
+
+        $constants = [];
+        foreach ($groups as $groupName => $group) {
+            // 编译器进程中的用户常量属于被编译程序的运行时状态，不能在静态阶段展开。
+            if (strcasecmp((string) $groupName, 'user') === 0 || !is_array($group)) {
+                continue;
+            }
+            foreach ($group as $name => $value) {
+                $constants[$name] = $value;
+            }
+        }
+        return $constants;
+    }
+
     /**
      * 检测操作系统、编译器以及 Windows 平台的 PHP lib 文件
      */