--- /dev/null
+diff -burN php-5.0.0b3/ext/zlib/zlib.c php-5.0.0b3-zlib/ext/zlib/zlib.c
+--- php-5.0.0b3/ext/zlib/zlib.c 2003-09-26 10:09:53.000000000 +0200
++++ php-5.0.0b3-zlib/ext/zlib/zlib.c 2003-12-27 00:40:53.000000000 +0100
+@@ -979,6 +979,11 @@
+
+ if (ZLIBG(output_handler) && strlen(ZLIBG(output_handler))) {
+ php_start_ob_buffer_named(ZLIBG(output_handler), 0, 1 TSRMLS_CC);
++ if (sapi_add_header("Content-Encoding: gzip", sizeof("Content-Encoding: gzip") - 1 , 1)!=FAILURE) {
++ if (sapi_add_header("Vary: Accept-Encoding", sizeof("Vary: Accept-Encoding") - 1, 1)==FAILURE) {
++ SG(sapi_headers).send_default_content_type = 0;
++ }
++ }
+ }
+ return SUCCESS;
+ }