ThaiSEOBoard.com

function generateRandomString($length = 15) {
    $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $charactersLength = strlen($characters);
    $randomString = '';
    for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, $charactersLength - 1)];
    }
    return $randomString;
}
      $photo=$_FILES['favicon']['tmp_name'];
      $photo_name=$_FILES['favicon']['name'];
      $photo_size=$_FILES['favicon']['size'];
      $photo_type=$_FILES['favicon']['type'];

      $name_last=explode(".", $photo_name);
      $n=count($name_last)-1;
      $lastname=strtolower($name_last[$n]);

      if($lastname=="gif" or $lastname=="png" or $lastname=="jpg" or $lastname=="jpeg") {
         $set_photo=explode(".", $photo_name);
         $pfname= "" .generateRandomString(). "_fp";
         $plname=$set_photo[1];
         $photoname=$pfname ."." .$plname;
         copy($photo, "../../uploads/" .$photoname);
         unlink($photo);

         $sql="REPLACE INTO site_os (SID, title, des, keys, favicon, google_anay ) VALUES ('' , '$_POST[title]', '$_POST[description]', '$_POST[keywords]', '$photoname', '$_POST[google_analytics]' )";
      } else {
        $sql="REPLACE INTO site_os (SID, title, des, keys, favicon, google_anay ) VALUES ('' , '$_POST[title]', '$_POST[description]', '$_POST[keywords]', '', '')";
      }
      $conn->set_charset("utf8");

      if (mysqli_query($conn, $sql)) {
      echo "success!";
      header("location:../index.php");
     
      } else {
      echo "Error: " . $sql . "<br>" . mysqli_error($conn);
      }