Problem with Encodings

For the Russian text to be displayed correctly, several conditions must be met. Firstly, the encoding of the file itself must be utf-8. Secondly, you need to specify the encoding in the HTML code:

<meta charset="utf-8">
<?php
	echo 'моя первая программа';
?>

Sometimes the described procedures do not help and then the mb_internal_encoding command can help:

<meta charset="utf-8">
<?php
	mb_internal_encoding('UTF-8');
	echo 'моя первая программа';
?>