Open Config.inc.php under the PHPMyAdmin folder in editor, try the commented options under lines 11 and 13 to achieve different password protect features.
04 | 
$cfg['Servers'][$i]['verbose'] = 'localhost'; | 
05 | 
$cfg['Servers'][$i]['host'] = 'localhost'; | 
06 | 
$cfg['Servers'][$i]['port'] = ''; | 
07 | 
$cfg['Servers'][$i]['socket'] = ''; | 
08 | 
$cfg['Servers'][$i]['connect_type'] = 'tcp'; | 
09 | 
$cfg['Servers'][$i]['extension'] = 'mysqli'; | 
10 | 
$cfg['Servers'][$i]['auth_type'] = 'config'; | 
15 | 
$cfg['Servers'][$i]['user'] = 'root'; | 
16 | 
$cfg['Servers'][$i]['password'] = '123abc';  | 
17 | 
$cfg['Servers'][$i]['AllowNoPassword'] = true; | 
19 | 
$cfg['DefaultLang'] = 'en-utf-8'; | 
20 | 
$cfg['ServerDefault'] = 1; | 
21 | 
$cfg['UploadDir'] = ''; |