php unicode decoding tool (unicode encoding converter)

//Unicode encoding and decoding conversion
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)
 { //Two bytes of text
 $str .= 'u'.base_convert(ord( $c), 10, 16).str_pad(base_convert(ord($c2), 10, 16), 2, 0, STR_PAD_LEFT);
 }
 else
 {
 $str .= $c2;
 }
 }
 return $str;
}
//Decode the UNICODE encoded content
function unicode_decode($name)
{ // bbs.it-home.org
 //Convert encoding, convert Unicode encoding into browsable utf -8 encoding
 $pattern = '/([w]+)|(\u([w]{4}))/i';
 preg_match_all($pattern, $name, $matches);
 if (!empty ($matches))
 {
 $name = '';
 for ($j = 0; $j < count($matches[0]); $j++)
 {
 $str = $matches[0][ $j];
 if (strpos($str, '\u') === 0)
 {
 $code = base_convert(substr($str, 2, 2), 16, 10);
 $code2 = base_convert (substr($str, 4), 16, 10);
 $c = chr($code).chr($code2);
 $c = iconv('UCS-2', 'UTF-8', $c );
 $name .= $c;
 }
 else
 {
 $name .= $str;
 }
 }
 }
 return $name;
}