help black list in guestbook

[LadyEnigma]

hi at all, in my lavalai if a user puts blacklist another user can continue to write in the guestbook, I would make sure that a user can not more black writing in the guestbook of the person who added to the blacklist, can anyone help me? Thanks in advance

[i0nutzxp]

if (isignored($uid, $who)) // isignored(int posterid, int gbownerid);
{
   echo 'Your are blacklisted<br />';
}
else
{
 // post in gb code
} 

[LadyEnigma]

if (isignored($uid, $who)) // isignored(int posterid, int gbownerid);
{
   echo 'Your are blacklisted<br />';
}
else
{
 // post in gb code
} 

in index? where? in this part of code?

//////////////////////////////////////////signblogcomment

else if($action=="signblogcomment")
{
$who=$_GET["who"];
addonline(getuid_sid($sid),"commenta un blog","");
if(!cansigngb(getuid_sid($sid), $who))
    {
    echo "<head>";
    echo "<title>Firmablog</title>";
    echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"../themes/$theme[0]\">";
    echo "</head>";
    echo "<body>";
      echo "<p align=\"center\">";
      echo "Puoi firmare questo blog<br/><br/>";
      echo "<a href=\"index.php?action=main&amp;sid=$sid\">Home</a>";
      echo "</p>";
      echo "</body>";
      echo "</html>";
      exit();
    }
    

    echo "<head>";
    echo "<title>Firma blog</title>";
    echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"../themes/$theme[0]\">";
    echo "</head>";
    echo "<body>";
    echo "<p align=\"center\">";
    echo "<form action=\"genproc.php?action=signblogcomment&amp;sid=$sid\" method=\"post\">";
    echo "<input type=\"hidden\" name=\"who\" Value=\"$who\">";
    echo "Testo:<input name=\"msgtxt\" maxlength=\"500\"/><br/>";
    echo "<input type=\"Submit\" name=\"Add\" Value=\"Add\"></form>";
    echo "<a href=\"lists.php?action=allbl&amp;sid=$sid\">Indietro a Blogs</a><br/>";
  echo "<br/><br/><b>0 </b><a accesskey=\"0\" href=\"index.php?action=main&amp;sid=$sid\"><img src=\"../images/home.gif\" alt=\"\"/>Home</a>";
    echo "</p>";
    echo "</body>";
} 

[i0nutzxp]

after if(!cansigngb(getuid_sid($sid), $who))

if(isignored($uid, $who))
{
echo "<head>";
echo "<title>Firmablog</title>";
echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"../themes/$theme[0]\">";
echo "</head>";
echo "<body>";
echo "<p align=\"center\">";
echo "Ignored<br/><br/>";
echo "<a href=\"index.php?action=main&amp;sid=$sid\">Home</a>";
echo "</p>";
echo "</body>";
echo "</html>";
exit();
}

and in genproc....and try to use your brain ....

[LadyEnigma]

if I had not had any problems I would not have asked for help ... this code works and I also put after the function stops working bank, do not understand what mistake: (

Added after 31 minutes:

i have resolved! thanx