arrays - URL prevent href button action php -

hi have href tag order array values(up down or down up),so problem when click twice in same button have no action performed.that because of in url have that: when click 1st time on button action done,but click again on same button nothing,but when click 'f5' action action done: exemple in url when click 1 time:

http://localhost/home/test.php?dir=down&keyword=1 

the second time click url remains same no action done.it done when click on f5.

my hyperlink:

echo "<a href=\"$_server[php_self]?dir=down&keyword=$keywordkey\"><img src=web/images/remove.png /></a>"; 

how can resolve ? thank you!!!

after click on button first time, give command script sort downwards.

once action complete, still have same command provide script i.e. down

since same command going code, same thus, results same.