PHP_HTTP_API ZEND_RESULT_CODE php_http_header_parse(const char *header, size_t length, HashTable *headers, php_http_info_callback_t callback_func, void **callback_data);
PHP_HTTP_API void php_http_header_to_callback(HashTable *headers, zend_bool crlf, php_http_pass_format_callback_t cb, void *cb_arg);
PHP_HTTP_API ZEND_RESULT_CODE php_http_header_parse(const char *header, size_t length, HashTable *headers, php_http_info_callback_t callback_func, void **callback_data);
PHP_HTTP_API void php_http_header_to_callback(HashTable *headers, zend_bool crlf, php_http_pass_format_callback_t cb, void *cb_arg);