+#define HTTP_CHECK_GZIP_LEVEL(level, action) \
+ if (level < -1 || level > 9) { \
+ http_error_ex(HE_WARNING, HTTP_E_INVALID_PARAM, "Invalid compression level (-1 to 9): %d", level); \
+ action; \
+ }
+
+#define HTTP_CHECK_HEADERS_SENT(action) \
+ if (SG(headers_sent) && !SG(request_info).no_headers) { \
+ char *output_start_filename = php_get_output_start_filename(TSRMLS_C); \
+ int output_start_lineno = php_get_output_start_lineno(TSRMLS_C); \
+ \
+ if (output_start_filename) { \
+ http_error_ex(HE_WARNING, HTTP_E_HEADER, "Cannot modify header information - headers already sent by (output started at %s:%d)", \
+ output_start_filename, output_start_lineno); \
+ } else { \
+ http_error(HE_WARNING, HTTP_E_HEADER, "Cannot modify header information - headers already sent"); \
+ } \
+ action; \
+ }