语法: newstr = ngx.decode_base64(str)
环境: set_by_lua, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.**
通过 base64 解码 str 字符串得到未编码过的字符串。如果 str 字符串没有被正常解码将会返回 nil。
English source:
syntax: newstr = ngx.decode_base64(str)
context: set_by_lua, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.**
Decodes the str argument as a base64 digest to the raw form. Returns nil if str is not well formed.