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                SetLicenseKey("License Code");  //Set your license key
                
                  if ( 1 == $obj->LoadFromFile("../PDFEncryptX.pdf", "") )  //Load PDF file
                  {
                    //Create Permissions: Can not to print, copy and edit.
                    iPermissions = $obj->CreatePermission(0, 0, 0, 1, 1, 1, 1, 1)
                
                    //Call encrypt() method
                    if ( 1 == $obj->Encrypt("../PDFEncryptX_CanNot_Print_Copy_Edit.pdf", 2, iPermissions, "", "") )
                    {
                      echo "Encrypt successful." ;
                    }
                  }
                
                  $obj = null;
                ?>