options_reading_blog_charset() WordPress Function

function options_reading_blog_charset() {
	echo '<input name="blog_charset" type="text" id="blog_charset" value="' . esc_attr( get_option( 'blog_charset' ) ) . '" class="regular-text" />';
	echo '<p class="description">' . __( 'The <a href="https://wordpress.org/support/article/glossary/#character-set">character encoding</a> of your site (UTF-8 is recommended)' ) . '</p>';
}