conditional query

[sabret00the]

heres an example of the code i'm trying to ask if will work or not

PHP Code:

             if (isset($conf_userid)) { // signed in member
                 $conf_userid = $bbuserinfo[userid];
             } else { // guest
                 $conf_userid = "NULL";
             }
 
 // this is the bit i'm asking about
         if (vboptions(guest confession == 1)) { this will allow guests to confess
             if ('confess' && $confession_submit && trim($message) != '' && $bbuserinfo[userid] >= 0) { guests can confess
         } else {
             if ('confess' && $confession_submit && trim($message) != '' && $bbuserinfo[userid] > 0) { members only can confess
         } 
 // above is the bit i'm asking about
 
                 $flood = $DB_site->query("
                     SELECT timestamp 
                     FROM confessions 
                     ORDER BY timestamp
                     WHERE userid = $bbuserinfo[userid]
                     DESC LIMIT 1
                 ");
                 $check = $DB_site->fetch_array($flood);
         
                 if (empty($nousername)) {
                     $conf_userid = "$bbuserinfo[userid]";
                 } else {
                     $conf_userid = "NULL";
                 }
 
                 if ((time() - $check[timestamp]) <= 15) {
                     eval("standarderror(\"".fetch_template("confession_error_flood")."\");");
                 }
                     $DB_site->query("
                         INSERT INTO confessions SET
                         text = '".addslashes($message)."',
                         userid = '$conf_userid',
                         timestamp = '".time()."'
                     ");
 } // guest or members only conditional ends here.