can select a specific account, but not do anything with it yet

preferences.php

@@ -12,10 +12,25 @@ if (!empty($_POST['oldpass'])) {
 	include_once ('includes/update-password.php');
 }
 
+if (!empty($_POST['prefacc'])) {
+    //this section contains code to set the users preferred game account
+    #include_once ('includes/set-prefacc.php');
+    echo 'this line will go away once the include file is completed!<br />';
+}
 echo '<h3>Change e-mail or password</h3>';
 
 // select which GW account you want to default to
 # needed code: select accid from table gwaccounts, store it in prefacc in table userinfo
+echo '<form action="preferences.php" method="post"><table><caption>Preferred GW account</caption>';
+echo '<tr><td><select name="prefacc">';
+$prefacc = $con->prepare("SELECT accid, accemail FROM gwaccounts WHERE userid = ?");
+$prefacc->bind_param("i", $_SESSION['userid']);
+$prefacc->execute();
+$resacc = $prefacc->get_result();
+while ($row = $resacc->fetch_assoc()) {
+    echo '<option value=' . $row['accid'] . '">' . $row['accemail'] . '</option>';
+}
+echo '</td><td><input type="submit" value="Set account"></td></tr></select></table></form>';
 
 // select which character from your GW account you want to default to
 # needed code: select charrid from table gwchars selected by accid