nginx替换输出文本

location ~ .*\.(php|php5)?($|/)
  {
    gzip off;
    proxy_set_header Accept-Encoding "";
    sub_filter '旧文本1' '新文本1';
    sub_filter '旧文本2' '新文本2';
    sub_filter_once off;
  
  
    fastcgi_ignore_client_abort on;
    proxy_ignore_client_abort   on; 
    fastcgi_pass   127.0.0.1:9000;
    fastcgi_index  index.php;
    fastcgi_split_path_info ^(.+\.php)(.*)$;
    fastcgi_param PATH_INFO $fastcgi_path_info;
    fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
    include        fastcgi_params;
  }