僅當在Netscape / iPlanet / Sun Web服務器中將PHP作為NSAPI模塊運行時，這些功能才可用 * [預定義常量](https://www.php.net/manual/zh/nsapi.constants.php) * [NSAPI 函數](https://www.php.net/manual/zh/ref.nsapi.php) * [nsapi\_request\_headers](https://www.php.net/manual/zh/function.nsapi-request-headers.php)— 取得所有HTTP頭部請求 * [nsapi\_response\_headers](https://www.php.net/manual/zh/function.nsapi-response-headers.php)— 獲取所有HTTP響應標頭 * [nsapi\_virtual](https://www.php.net/manual/zh/function.nsapi-virtual.php)— 執行NSAPI子請求 NSAPI實現了Apache模塊的部分功能，以實現最大的兼容性。 **NSAPI實現的Apache函數** | Apache函數（僅作為別名） | NSAPI功能 | 描述 | | --- | --- | --- | | [apache_request_headers()](https://www.php.net/manual/en/function.apache-request-headers.php) | [nsapi\_request_headers()](https://www.php.net/manual/en/function.nsapi-request-headers.php) | 提取所有HTTP請求標頭 | | [apache_response_headers()](https://www.php.net/manual/en/function.apache-response-headers.php) | [nsapi_response_headers()](https://www.php.net/manual/en/function.nsapi-response-headers.php) | 提取所有HTTP響應標頭 | | [getallheaders()](https://www.php.net/manual/en/function.getallheaders.php) | [nsapi_request_headers()](https://www.php.net/manual/en/function.nsapi-request-headers.php) | 提取所有HTTP請求標頭 | |[virtual()](https://www.php.net/manual/en/function.virtual.php) | [nsapi\_virtual()](https://www.php.net/manual/en/function.nsapi-virtual.php) | 使NSAPI成為子請求 |