User info in header

I started making this rank system where depending on how many posts a user has, they have a certain rank image, and I wanted it to appear in the header of the board, but I don't know where to put it to make it work correctly. Any help here please? Thank you in advance

PHP Code:


        if (($userinfo['usergroupid'] ==5) || ($userinfo['usergroupid'] ==6) || ($userinfo['usergroupid'] ==7)) {
        $ranks= "<img src=\"images/ranks/rank10.gif\">";
        }    
           else if ($userinfo['posts']<=25) {
        $ranks="<img src=\"images/ranks/rank0.gif\">";
        }
           else if ($userinfo['posts']<=100) {
        $ranks="<img src=\"images/ranks/rank1.gif\">";
        }
           else if ($userinfo['posts']<=300) {
        $ranks="<img src=\"images/ranks/rank2.gif\">";
        }
           else if ($userinfo['posts']<=400) {
        $ranks="<img src=\"images/ranks/rank3.gif\">";
        }
           else if ($userinfo['posts']<=500) {
        $ranks="<img src=\"images/ranks/rank4.gif\">";
        }
           else if ($userinfo['posts']<=600) {
        $ranks="<img src=\"images/ranks/rank5.gif\">";
        }
            else if ($userinfo['posts']<=700) {
        $ranks="<img src=\"images/ranks/rank6.gif\">";
        }
            else if ($userinfo['posts']<=800) {
        $ranks="<img src=\"images/ranks/rank7.gif\">";
        }
            else if ($userinfo['posts']<=900) {
        $ranks="<img src=\"images/ranks/rank8.gif\">";
        }
            else if ($userinfo['posts']<=1000) {
        $ranks="<img src=\"images/ranks/rank9.gif\">";
        }
            else if ($userinfo['posts']<=1100) {
        $ranks="<img src=\"images/ranks/rank9.gif\">";
        } 


[assassingod]

You can either use global.php or the phpinclude template. Both work fine either way