function get_text_width($text, $font, $size, $word_spacing = 0, $letter_spacing = 0)
{
$fh = $this->_load_font($font);
// Determine the additional width due to extra spacing
$num_spaces = mb_substr_count($text, " ");
$delta = $word_spacing * $num_spaces;
if ($letter_spacing) {
$num_chars = mb_strlen($text);
$delta += ($num_chars - $num_spaces) * $letter_spacing;
}
//***return $this->_pdf->stringwidth($text, $fh, $size) + $delta;
return $this->_pdf->stringwidth($this->_pdf->utf8_to_utf16($text, ""), $fh, $size) + $delta;
//***
}