Function: Sanitizes a string into a slug, which can be used in URLs or HTML attributes.

Function: Sanitizes a title with the ‘query’ context.

Function: Don’t auto-p wrap shortcodes that stand alone.

Function: Checks to see if a string is utf8 encoded.

Function: Converts a number of special characters into their HTML entities.

Function: Converts a number of HTML entities into their special characters.

Function: Checks for invalid UTF8 in a string.

Function: Encodes the Unicode values to be used in the URI.

Function: Sanitizes a filename, replacing whitespace with dashes.