Made ob_start() and friends reentrant. It's now possible to implement this

long-requested functionality, now that output buffering is re-entrant:

function eval_ret($code)
{
	ob_start();
	eval($code);
	$retval = ob_get_contents();
	ob_end_clean();
	return $retval;
}

sapi/apache/sapi_apache.c

@@ -89,7 +89,7 @@ int apache_php_module_main(request_rec *r, int display_source_mode CLS_DC ELS_DC
 	}
 	
 	php_header();			/* Make sure headers have been sent */
-	php_end_ob_buffering(1);
+	php_end_ob_buffers(1);
 	return (OK);
 }