Add options to wysiwyg Wordpress

wysiwyg.php

// Options wisywg

add_filter('mce_buttons_2', function( $buttons ) {
    array_shift( $buttons );
    array_unshift( $buttons, 'fontsizeselect');
    return $buttons;
} );

add_filter( 'tiny_mce_before_init', function( $initArray ){
    $initArray['theme_advanced_font_sizes'] = "9px 10px 12px 13px 14px 16px 18px 22px 24px 28px 32px 36px";
    $initArray['fontsize_formats'] = "9px 10px 12px 13px 14px 16px 18px 22px 24px 28px 32px 36px";
    return $initArray;
});