seems_utf8()
Function: Checks to see if a string is utf8 encoded.
Source: wp-includes/formatting.php:879
_wp_specialchars()
Function: Converts a number of special characters into their HTML entities.
Source: wp-includes/formatting.php:934
wp_specialchars_decode()
Function: Converts a number of HTML entities into their special characters.
Source: wp-includes/formatting.php:1014
wp_check_invalid_utf8()
Function: Checks for invalid UTF8 in a string.
Source: wp-includes/formatting.php:1097
utf8_uri_encode()
Function: Encodes the Unicode values to be used in the URI.
Source: wp-includes/formatting.php:1148
remove_accents()
Function: Converts all accent characters to ASCII characters.
Source: wp-includes/formatting.php:1595
sanitize_file_name()
Function: Sanitizes a filename, replacing whitespace with dashes.
Source: wp-includes/formatting.php:2015
sanitize_file_name_chars
Filter Hook: Filters the list of characters to remove from a filename.
Source: wp-includes/formatting.php:2046
sanitize_file_name
Filter Hook: Filters a sanitized filename string.
Source: wp-includes/formatting.php:2108
sanitize_user()
Function: Sanitizes a username, stripping out unsafe characters.
Source: wp-includes/formatting.php:2126