# Charset Encoding There are a variety of encodings for textual data, ISO-8859-1 (Latin1) and UTF-8 being the most popular. Unless you change `\Smarty\Smarty::$_CHARSET`, Smarty recognizes `UTF-8` as the internal charset. > **Note** > > `ISO-8859-1` has been PHP\'s default internal charset since the > beginning. Unicode has been evolving since 1991. Since then it has > become the one charset to conquer them all, as it is capable of > encoding most of the known characters even across different character > systems (latin, cyrillic, japanese, ...). `UTF-8` is unicode\'s most > used encoding, as it allows referencing the thousands of character > with the smallest size overhead possible. > > Since unicode and UTF-8 are very wide spread nowadays, their use is > strongly encouraged. > **Note** > > Smarty\'s internals and core plugins are truly UTF-8 compatible since > Smarty 3.1. ```php