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function unhtmlentities($string){    // replace numeric entities    $string = preg_replace('~&#x([0-9a-f]+);~ei', 'chr(hexdec("\\1"))', $string);    $string = preg_replace('~&#([0-9]+);~e', 'chr("\\1")', $string);    // replace literal entities    $trans_tbl = get_html_translation_table(HTML_ENTITIES);    $trans_tbl = array_flip($trans_tbl);    return strtr($string, $trans_tbl);}