How to resolve charset utf8 in PHP?

Question

I use function htmlspecialchars() in PHP and cyrillic symbols.

I get error:

Message: htmlspecialchars(): charset `utf8' not supported, assuming utf-8

Is there alretnative htmlspecialchars() or solution for this charset?

PHP code:

$text  = htmlspecialchars($text, ENT_QUOTES,$charset);

Answer 1

Remember to call filter_input(INPUT_GET, 'name', FILTER_SANITIZE_STRING); first if you bring the data from a REQUEST to this arena. This is what you need in order to use htmlspecialchars:

$text = htmlspecialchars($name, ENT_QUOTES, 'UTF-8');