Problem in displaying BLOB image from MySQL database in a webpage

[eluser]Unknown[/eluser]
To display an image stored in MySQL database I am using the following code in my controller

Code:

function display_image($id){
  
        $user='root'; $password='Passw0rd'; $db='pppmis';
        mysql_connect('localhost', $user, $password) or die('I cannot connect to db: ' .  
        mysql_error());
        mysql_select_db('pppmis');

        $query = mysql_query("SELECT * FROM project_image WHERE projectid = ".$id);
        $row = mysql_fetch_array($query);
        $content = $row['image'];

        header("Content-type: ".$row['mime']);
        echo $content;
}

which is not working, all that I am getting is a string as output as below

http://localhost/application/index.php/m...ay_image/1

but at the same time if I use this function in a simple php file and directly call the function in that file it works and outputs the image as desired.

I have also tried using

Code:

$this->output->set_header('Content-type: image/jpg');
        $this->output->set_output($content);

without any luck.

Any help here would be of much appreciation.

Thanks and happy new year.