diff --git a/src/Php/CompilerBase.php b/src/Php/CompilerBase.php
index 4f68e135..05c0198f 100644
--- a/src/Php/CompilerBase.php
+++ b/src/Php/CompilerBase.php
@@ -216,13 +216,7 @@ class CompilerBase extends \PhpAot\Core\Translator
         'phpx_big_float.h',
         'phpx_decimal.h',
         'php_aot_helper.h',
-        'php_std_core.h',
-        'php_std_string.h',
-        'php_std_misc.h',
-        'php_std_array.h',
-        'php_std_datetime.h',
-        'php_std_fs.h',
-        'php_std_math.h',
+        'phpx_std.h',
     ];
     protected array $localHeaders = [];
     protected array $internalFunctions = [];
@@ -4848,6 +4842,9 @@ class CompilerBase extends \PhpAot\Core\Translator
 
     protected function parseThrow(mixed $expr): string
     {
+        if ($this->method === '__destruct') {
+            $this->warning($expr, "Throwing exception in {$this->getFullClassName()}::__destruct() may cause memory leak");
+        }
         if ($this->isNewExpr($expr->expr)) {
             $ex = $this->parseExpr($expr->expr);
         } elseif ($this->isVarExpr($expr->expr)) {
@@ -4937,7 +4934,7 @@ class CompilerBase extends \PhpAot\Core\Translator
         foreach ($expr->parts as $part) {
             $list[] = $this->identifierToStr($part);
         }
-        return 'php::std::shell_exec(php::concat({' . implode(', ', $list) . '}))';
+        return 'php::fn::shell_exec(php::concat({' . implode(', ', $list) . '}))';
     }
 
     protected function parseGoto(Node\Stmt\Goto_ $v): string
diff --git a/src/Php/Optimizer/FuncCallOptimizer.php b/src/Php/Optimizer/FuncCallOptimizer.php
index 767c9805..4bf4ec19 100644
--- a/src/Php/Optimizer/FuncCallOptimizer.php
+++ b/src/Php/Optimizer/FuncCallOptimizer.php
@@ -129,26 +129,26 @@ trait FuncCallOptimizer
                 self::TYPE_BIGINT => 'php::BigInt::abs',
                 self::TYPE_BIGFLOAT => 'php::BigFloat::abs',
                 self::TYPE_DECIMAL => 'php::Decimal::abs',
-                'fallback' => 'php::std::abs',
+                'fallback' => 'php::fn::abs',
             ]],
             'pow' => ['bigDispatch' => [
                 self::TYPE_BIGINT => 'php::BigInt::pow',
                 self::TYPE_DECIMAL => 'php::Decimal::pow',
-                'fallback' => 'php::std::pow',
+                'fallback' => 'php::fn::pow',
             ]],
             'sqrt' => ['bigDispatch' => [
                 self::TYPE_BIGINT => 'php::BigInt::sqrt',
                 self::TYPE_DECIMAL => 'php::Decimal::sqrt',
                 self::TYPE_BIGFLOAT => 'php::BigFloat::sqrt',
-                'fallback' => 'php::std::sqrt',
+                'fallback' => 'php::fn::sqrt',
             ]],
             'floor' => ['bigDispatch' => [
                 self::TYPE_DECIMAL => 'php::Decimal::floor',
-                'fallback' => 'php::std::floor',
+                'fallback' => 'php::fn::floor',
             ]],
             'ceil' => ['bigDispatch' => [
                 self::TYPE_DECIMAL => 'php::Decimal::ceil',
-                'fallback' => 'php::std::ceil',
+                'fallback' => 'php::fn::ceil',
             ]],
 
             // Type conversions
@@ -227,9 +227,9 @@ trait FuncCallOptimizer
     {
         $target = $config['target'] ?? null;
         if ($target === null) {
-            $target = 'php::std::' . $name;
+            $target = 'php::fn::' . $name;
         } elseif (!str_starts_with($target, 'php::')) {
-            $target = 'php::std::' . $target;
+            $target = 'php::fn::' . $target;
         }
 
         $refInfo = $this->getArgReflectionInfo($name);
@@ -563,7 +563,7 @@ trait FuncCallOptimizer
         if (count($e->args) >= 3) {
             return false;
         }
-        return $this->dispatchFuncCall('is_callable', $e, ['target' => 'php::std::is_callable']);
+        return $this->dispatchFuncCall('is_callable', $e, ['target' => 'php::fn::is_callable']);
     }
 
     protected function genGetClassOptimized(string $n, Node\Expr\FuncCall $e, array $c): string
@@ -572,7 +572,7 @@ trait FuncCallOptimizer
         if ($this->isVarExpr($obj) && $this->isTypedObject($obj->name)) {
             return $this->getLiteralString($this->getObjectType($obj->name));
         }
-        return 'php::std::get_class(' . $this->parseIdentifier($obj) . ')';
+        return 'php::fn::get_class(' . $this->parseIdentifier($obj) . ')';
     }
 
     protected function genGetParentClass(string $n, Node\Expr\FuncCall $e, array $c): string
@@ -589,7 +589,7 @@ trait FuncCallOptimizer
             if ($cls && $cls->extends) return $this->getLiteralString($cls->extends);
             if ($cls && !$cls->extends) return 'false';
         }
-        return 'php::std::get_parent_class(' . $this->parseIdentifier($arg) . ')';
+        return 'php::fn::get_parent_class(' . $this->parseIdentifier($arg) . ')';
     }
 
     protected function genFunctionExistsOptimized(string $n, Node\Expr\FuncCall $e, array $c): string
@@ -621,12 +621,12 @@ trait FuncCallOptimizer
     {
         $cnt = count($e->args);
         if ($cnt >= 3) {
-            return 'php::std::array_keys_filter(' . $this->getArg($e, 0) . ', ' . $this->getArg($e, 1) . ', ' . $this->getArg($e, 2) . ')';
+            return 'php::fn::array_keys_filter(' . $this->getArg($e, 0) . ', ' . $this->getArg($e, 1) . ', ' . $this->getArg($e, 2) . ')';
         }
         if ($cnt >= 2) {
-            return 'php::std::array_keys_filter(' . $this->getArg($e, 0) . ', ' . $this->getArg($e, 1) . ', false)';
+            return 'php::fn::array_keys_filter(' . $this->getArg($e, 0) . ', ' . $this->getArg($e, 1) . ', false)';
         }
-        return 'php::std::array_keys(' . $this->getArg($e, 0) . ')';
+        return 'php::fn::array_keys(' . $this->getArg($e, 0) . ')';
     }
 
     protected function genArrayKeyExists(string $n, Node\Expr\FuncCall $e, array $c): string
@@ -646,12 +646,12 @@ trait FuncCallOptimizer
         }
         $args = count($e->args);
         if ($args >= 3) {
-            return 'php::std::round(' . $this->getArg($e, 0) . ', ' . $this->convertIntExpr($this->getArg($e, 1)) . ', ' . $this->convertIntExpr($this->getArg($e, 2)) . ')';
+            return 'php::fn::round(' . $this->getArg($e, 0) . ', ' . $this->convertIntExpr($this->getArg($e, 1)) . ', ' . $this->convertIntExpr($this->getArg($e, 2)) . ')';
         }
         if ($args >= 2) {
-            return 'php::std::round(' . $this->getArg($e, 0) . ', ' . $this->convertIntExpr($this->getArg($e, 1)) . ')';
+            return 'php::fn::round(' . $this->getArg($e, 0) . ', ' . $this->convertIntExpr($this->getArg($e, 1)) . ')';
         }
-        return 'php::std::round(' . $this->getArg($e, 0) . ')';
+        return 'php::fn::round(' . $this->getArg($e, 0) . ')';
     }
 
     protected function genCount(string $n, Node\Expr\FuncCall $e, array $c): string
@@ -659,9 +659,9 @@ trait FuncCallOptimizer
         $folded = $this->doFoldCountLiteral($e);
         if ($folded !== false) return $folded;
         if (count($e->args) >= 2) {
-            return 'php::std::count(' . $this->getArg($e, 0) . ', ' . $this->convertIntExpr($this->getArg($e, 1)) . ')';
+            return 'php::fn::count(' . $this->getArg($e, 0) . ', ' . $this->convertIntExpr($this->getArg($e, 1)) . ')';
         }
-        return 'php::std::count(' . $this->getArg($e, 0) . ')';
+        return 'php::fn::count(' . $this->getArg($e, 0) . ')';
     }
 
     protected function genDefine(string $n, Node\Expr\FuncCall $e, array $c): string|false
@@ -672,9 +672,9 @@ trait FuncCallOptimizer
         }
         $args = count($e->args) >= 3 ? 3 : 2;
         if ($args == 3) {
-            return 'php::std::define(' . $this->getArg($e, 0) . ', ' . $this->getArg($e, 1) . ', ' . $this->getArg($e, 2) . ')';
+            return 'php::fn::define(' . $this->getArg($e, 0) . ', ' . $this->getArg($e, 1) . ', ' . $this->getArg($e, 2) . ')';
         }
-        return 'php::std::define(' . $this->getArg($e, 0) . ', ' . $this->getArg($e, 1) . ')';
+        return 'php::fn::define(' . $this->getArg($e, 0) . ', ' . $this->getArg($e, 1) . ')';
     }
 
     // =========================================================================
@@ -740,9 +740,9 @@ trait FuncCallOptimizer
                 return 'true';
             }
             $funcName = $this->getLiteralString($nameLower);
-            return 'php::std::function_exists(' . $funcName . ')';
+            return 'php::fn::function_exists(' . $funcName . ')';
         }
-        return 'php::std::function_exists(' . $this->parseIdentifier($funcName) . ')';
+        return 'php::fn::function_exists(' . $this->parseIdentifier($funcName) . ')';
     }
 
     protected function genGetClass(Node\Expr\FuncCall $expr): string
@@ -751,7 +751,7 @@ trait FuncCallOptimizer
         if ($this->isVarExpr($object) and $this->isTypedObject($object->name)) {
             return $this->getLiteralString($this->getObjectType($object->name));
         }
-        return 'php::std::get_class(' . $this->parseIdentifier($object) . ')';
+        return 'php::fn::get_class(' . $this->parseIdentifier($object) . ')';
     }
 
     protected function genCompactOrig(Node\Expr\FuncCall $expr): string
diff --git a/src/Php/Parser/AssignOpTrait.php b/src/Php/Parser/AssignOpTrait.php
index dd4bbeb5..99fffb03 100644
--- a/src/Php/Parser/AssignOpTrait.php
+++ b/src/Php/Parser/AssignOpTrait.php
@@ -347,7 +347,7 @@ trait AssignOpTrait
                 return $var . '.append(' . $rightExprStr . ')';
             }
             if ($this->isAssignOpPow($op)) {
-                $powExpr = 'php::math::pow(' . $var . ', ' . $rightExprStr . ')';
+                $powExpr = 'php::fn::pow(' . $var . ', ' . $rightExprStr . ')';
                 return $var . ' = ' . $this->convertVarType($var, $powExpr);
             }
             return $var . ' ' . $op . ' ' . $rightExprStr;
diff --git a/src/Php/Parser/BinaryOpTrait.php b/src/Php/Parser/BinaryOpTrait.php
index 759051d9..c69f639a 100644
--- a/src/Php/Parser/BinaryOpTrait.php
+++ b/src/Php/Parser/BinaryOpTrait.php
@@ -122,7 +122,7 @@ trait BinaryOpTrait
         }
 
         if ($op === '%' and !($leftType === self::TYPE_INT and $rightType === self::TYPE_INT)) {
-            return 'php::math::mod(' . $leftExpr . ', ' . $rightExpr . ')';
+            return 'php::fn::mod(' . $leftExpr . ', ' . $rightExpr . ')';
         }
 
         return '((' . $leftExpr . ') ' . $op . ' (' . $rightExpr . '))';
@@ -190,7 +190,7 @@ trait BinaryOpTrait
         }
         $left  = $this->parseIdentifier($expr->left);
         $right = $this->parseIdentifier($expr->right);
-        return 'php::math::pow(' . $left . ', ' . $right . ')';
+        return 'php::fn::pow(' . $left . ', ' . $right . ')';
     }
 
     protected function parseBinaryOpBitwiseAnd(Expr\BinaryOp\BitwiseAnd $expr): string
diff --git a/src/Php/Translator.php b/src/Php/Translator.php
index 77e89f1f..9af4abc2 100644
--- a/src/Php/Translator.php
+++ b/src/Php/Translator.php
@@ -398,7 +398,7 @@ class Translator extends Preprocessor
 
     public function prepare(string $path): array
     {
-        // shell_exec 和 define 已通过 php::std:: 直接调用，无需动态符号表
+        // shell_exec 和 define 已通过 php::fn:: 直接调用，无需动态符号表
 
         // 根据平台检查库文件（仅在构建二进制文件时需要）
         if ($this->isBuildModeBin()) {
@@ -681,7 +681,7 @@ CODE;
         $code .= '// register constants' . PHP_EOL;
         foreach ($this->constants as $name => $const) {
             $code .= "{$name} = {$const->value};\n";
-            $code .= 'php::std::define(' . $this->genCharPtr($const->name, true) . ', ' . $name . ');' . PHP_EOL;
+            $code .= 'php::fn::define(' . $this->genCharPtr($const->name, true) . ', ' . $name . ');' . PHP_EOL;
         }
         $code .= '// global vars ' . PHP_EOL;
         foreach ($this->globalVars as $name => $type) {
@@ -970,15 +970,6 @@ CODE;
         // 生成扩展模块的源文件
         $sourceFiles[] = $this->genExtension();
 
-        // stdlib: 直接 C++ 包装的 Zend 内置函数
-        $sourceFiles[] = $this->getPhpxDir() . '/src/misc/php_std_core.cpp';
-        $sourceFiles[] = $this->getPhpxDir() . '/src/misc/php_std_array.cpp';
-        $sourceFiles[] = $this->getPhpxDir() . '/src/misc/php_std_string.cpp';
-        $sourceFiles[] = $this->getPhpxDir() . '/src/misc/php_std_datetime.cpp';
-        $sourceFiles[] = $this->getPhpxDir() . '/src/misc/php_std_fs.cpp';
-        $sourceFiles[] = $this->getPhpxDir() . '/src/misc/php_std_math.cpp';
-        $sourceFiles[] = $this->getPhpxDir() . '/src/misc/php_std_misc.cpp';
-
         // embed 需要 main 函数，以及 cli 的内置函数定义
         if ($this->isBuildModeBin()) {
             $sourceFiles[] = $this->getPhpxDir() . '/src/misc/main.cc';
diff --git a/src/Php/UniversalMethodCall.php b/src/Php/UniversalMethodCall.php
index 0bb75f0e..6e20f390 100644
--- a/src/Php/UniversalMethodCall.php
+++ b/src/Php/UniversalMethodCall.php
@@ -90,7 +90,7 @@ trait UniversalMethodCall
             'trim'                  => ['handler' => 'php_fn', 'fn' => 'trim', 'return_type' => CompilerBase::TYPE_STR, 'min_args' => 0, 'max_args' => 2],
             'lTrim'                 => ['handler' => 'php_fn', 'fn' => 'ltrim', 'return_type' => CompilerBase::TYPE_STR, 'min_args' => 0, 'max_args' => 1],
             'rTrim'                 => ['handler' => 'php_fn', 'fn' => 'rtrim', 'return_type' => CompilerBase::TYPE_STR, 'min_args' => 0, 'max_args' => 1],
-            'parseStr'              => ['handler' => 'cpp_fn', 'fn' => 'php::std::parse_str', 'return_type' => CompilerBase::TYPE_ARRAY, 'min_args' => 0, 'max_args' => 0],
+            'parseStr'              => ['handler' => 'cpp_fn', 'fn' => 'php::fn::parse_str', 'return_type' => CompilerBase::TYPE_ARRAY, 'min_args' => 0, 'max_args' => 0],
             'parseUrl'              => ['handler' => 'php_fn', 'fn' => 'parse_url', 'return_type' => CompilerBase::TYPE_VAR, 'min_args' => 0, 'max_args' => 1],
             'contains'              => ['handler' => 'php_fn', 'fn' => 'str_contains', 'return_type' => CompilerBase::TYPE_BOOL, 'min_args' => 1, 'max_args' => 1],
             'incr'                  => ['handler' => 'php_fn', 'fn' => 'str_increment', 'return_type' => CompilerBase::TYPE_STR, 'min_args' => 0, 'max_args' => 0],