-#define http_send_header(h) http_send_status_header(0, (h))
-#define http_send_header_ex(h, r) http_send_status_header_ex(0, (h), (r))
+#define http_send_header(n, v, r) _http_send_header_ex((n), strlen(n), (v), strlen(v), (r) TSRMLS_CC)
+#define http_send_header_ex(n, nl, v, vl, r) _http_send_header_ex((n), (nl), (v), (vl), (r) TSRMLS_CC)
+PHP_HTTP_API STATUS _http_send_header_ex(const char *name, size_t name_len, const char *value, size_t value_len, zend_bool replace TSRMLS_DC);
+#define http_send_header_string(h) _http_send_status_header_ex(0, (h), 1 TSRMLS_CC)
+#define http_send_header_string_ex(h, r) _http_send_status_header_ex(0, (h), (r) TSRMLS_CC)