fix - PHP8 - ${}

Author: testlinkDevTeam

lib/functions/common.php

@@ -424,7 +424,7 @@ function initProject(&$db,$hash_user_sel) {
   $tplan_id = isset($_SESSION['testplanID']) ? $_SESSION['testplanID'] : null;
 
   // Now we need to validate the TestPlan
-  $ckObj->name = $ckCfg->prefix .  "TL_user${_SESSION['userID']}_proj${tproject_id}_testPlanId";
+  $ckObj->name = $ckCfg->prefix .  "TL_user{$_SESSION['userID']}_proj{$tproject_id}_testPlanId";
 
   if($user_sel["tplan_id"] != 0) {
     $ckObj->value = $user_sel["tplan_id"];