PHP汉字转Unicode编码[笔记]

来源：https://www.jb51.net/article/104925.htm

function unicode_encode($name)
{
  $name = iconv('UTF-8', 'UCS-2', $name);
  $len = strlen($name);
  $str = '';
  for ($i = 0; $i < $len - 1; $i = $i + 2)
  {
    $c = $name[$i];
    $c2 = $name[$i + 1];
    if (ord($c) > 0)
    {  // 两个字节的文字
      $str .= '\u'.base_convert(ord($c), 10, 16).base_convert(ord($c2), 10, 16);
    }
    else
    {
      $str .= $c2;
    }
  }
  return $str;
}