$string = $text;
$returnString = '';

$pattern = '/((?:\\u[dA-F]{4}){2})/i';
preg_match_all ( $pattern , $string , $mtchs);
$patternSplit = '/((?:\\u[dA-F]{4}){2})(\\u)/i';
$formattedData = preg_replace($patternSplit, ' $1 $2', $string);

$wordArray = explode(" ", $formattedData);
if(count($wordArray) > 0)
{
    foreach($wordArray as $wa)
    {
        $this->db->where("emoticon_code",$wa);
        $returnCode = $this->db->get("emoticon");
        if($returnCode->num_rows()>0)
        {
            $returnArray = $returnCode->result_array();
            $retImage = base_url(). 'uploads/emoticon/'. $returnArray[0]['emoticon_image'];
            if($from == 'admin')
                $wa = "<img src='$retImage' width='20px' height='20px'/>";
            else
                $wa =   $retImage;
        }
        $returnString .= " ".$wa;
    }
}
else
{
    $returnString = '';
}
return $returnString;