mb_check_encoding

(PHP 4 >= 4.4.3, PHP 5 >= 5.1.3)

mb_check_encoding — Check if the string is valid for the specified encoding

说明

bool mb_check_encoding ([ string $var [, string $encoding ]] )

mb_check_encoding() checks if the specified byte stream is valid for the specified encoding. It is useful to prevent so-called "Invalid Encoding Attack".

参数

var: byte stream to check. If it is omitted, this function checks all the input from the beginning of the request.
encoding: Expected encoding.

返回值

如果成功则返回 TRUE，失败则返回 FALSE。