特殊字符显示无效

Question

I am using a way to compress HTML on fly. Below is the function

function compress_page($buffer) {
    $search = array(
        '/\>[^\S ]+/s', /*strip whitespaces after tags, except space*/
        '/[^\S ]+\</s', /*strip whitespaces before tags, except space*/
        '/(\s)+/s',  /*shorten multiple whitespace sequences*/
    );
    $replace = array(
        '>',
        '<',
        '\\1',
    );
    $buffer = preg_replace($search, $replace, $buffer);
    return $buffer;
}

function is working but the problem is, after implement this, germam characters are not showing anymore. They are showing like "�". Can you please help me to find problem. I tried other ways to minify HTML but get same proble.

Answer 1

After research, I found this solution. This will minify full html in one line.

function pt_html_minyfy_finish( $html )  {
  $html = preg_replace('/<!--(?!s*(?:[if [^]]+]|!|>))(?:(?!-->).)*-->/s', '', $html);
  $html = str_replace(array("
", "", "
", "\t"), '', $html);
  while ( stristr($html, '  '))
     $html = str_replace('  ', ' ', $html);
 return $html;
}

Hope this will help someone!