avoid use of 'RETURNING' sql clause

.gitignore

@@ -1,6 +1,7 @@
 .vs
 .idea
 .code
+.vite
 
 vendor
 

public/utils.php

@@ -7,10 +7,14 @@ function get_public_path() {
     // find the server path of the index.php file
     $basePath = substr(__DIR__, strlen($_SERVER['DOCUMENT_ROOT']));
 
-    $c = $basePath[strlen($basePath) - 1];
+    $basePathLen = strlen($basePath);
+    if ($basePathLen == 0)
+        return "";
+    
+    $c = $basePath[$basePathLen - 1];
 
     if ($c == "/" || $c == "\\") {
-        $basePath = substr($basePath, 0, strlen($basePath) - 1);
+        $basePath = substr($basePath, 0, $basePathLen - 1);
     }
     return $basePath;
 }

src/Gateway/TacticInfoGateway.php

@@ -26,10 +26,11 @@ class TacticInfoGateway {
     }
 
     public function insert(string $name): TacticInfo {
-        $row = $this->con->fetch(
-            "INSERT INTO TacticInfo(name, creation_date) VALUES(:name, CURRENT_TIMESTAMP) RETURNING id, creation_date",
+        $this->con->exec(
+            "INSERT INTO TacticInfo(name, creation_date) VALUES(:name, CURRENT_TIMESTAMP)",
             [":name" => [$name, PDO::PARAM_STR]]
-        )[0];
+        );
+        $row = $this->con->fetch("SELECT id, creation_date FROM TacticInfo ORDER BY id DESC LIMIT 1", [])[0];
         return new TacticInfo(intval($row["id"]), $name, strtotime($row["creation_date"]));
     }