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
Description
   bool mb_check_encoding
    ([ string $var = NULL
   [, string $encoding = mb_internal_encoding()
  ]] )
  Checks if the specified byte stream is valid for the specified encoding. It is useful to prevent so-called "Invalid Encoding Attack".
Parameters
- var
- 
      The byte stream to check. If it is omitted, this function checks all the input from the beginning of the request. 
- encoding
- 
      The expected encoding. 
Return Values
Returns TRUE on success or FALSE on failure.