Hello guys, i'm trying to show the full name of my user what is logged in. I am new to writing in oop. Im getting a undifined index fullname error. Can anyone help me?

  /*** for showing the username or fullname ***/
  public function get_fullname($userid)
         $stmt = $this->db->prepare("SELECT fullname FROM users WHERE   userid = $userid");  

    /* Fetch all of the remaining rows in the result set */
    $user_data = $stmt->fetchAll();
    echo $user_data['fullname'];


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and don't put php variables directly in to the SQL query use bind_param instead http://php.net/manual/en/mysqli-stmt.prepare.php

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Try :

echo $user_data[0]['fullname'];

since fetchAll returns a set of all the rows (only one in your case).

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