diff --git a/sys/sys.php b/sys/sys.php
index 97c0461..dd880fc 100755
--- a/sys/sys.php
+++ b/sys/sys.php
@@ -5,23 +5,55 @@
 *     
 *       
 */
-function sql_read($query) {
+<?php
+
+// Helper function to manage connections cleanly
+function get_db_connection($db_host = null, $db_user = null, $db_pass = null) {
     global $db;
-      if (!isset($db) || is_null($db)) $db = new PDO("mysql:host=".DB_HOST.";",DB_USER,DB_PASS);
-      $stmt = $db->prepare($query);
-        if ($stmt->execute() === false) return ["status" => "error", "query"=>$query];
-        return $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+    // If custom credentials are provided, create a fresh, temporary connection
+    // This prevents overwriting the global $db with an alternative database
+    if ($db_host !== null || $db_user !== null || $db_pass !== null) {
+        $host = $db_host ?? DB_HOST;
+        $user = $db_user ?? DB_USER;
+        $pass = $db_pass ?? DB_PASS;
+        return new PDO("mysql:host=" . $host . ";", $user, $pass);
+    }
+
+    // Otherwise, use or initialize the global connection using constants
+    if (!isset($db) || is_null($db)) {
+        $db = new PDO("mysql:host=" . DB_HOST . ";", DB_USER, DB_PASS);
+    }
+    return $db;
 }
-function sql_write($query) {
-    global $db;
-      if (!isset($db) || is_null($db)) $db = new PDO("mysql:host=".DB_HOST.";",DB_USER,DB_PASS);
-      $stmt = $db->prepare($query);
-        if ($stmt->execute() === false) die ("sql error: $query");
-        return $stmt->rowCount();
+
+function sql_read($query, $db_host = null, $db_user = null, $db_pass = null) {
+    $pdo = get_db_connection($db_host, $db_user, $db_pass);
+    $stmt = $pdo->prepare($query);
+
+    if ($stmt->execute() === false) {
+        return ["status" => "error", "query" => $query];
+    }
+    return $stmt->fetchAll(PDO::FETCH_ASSOC);
 }
-function sql($query) {
-    if (strpos($query, "SELECT ") === 0) return sql_read($query);
-      else return sql_write($query);
+
+function sql_write($query, $db_host = null, $db_user = null, $db_pass = null) {
+    $pdo = get_db_connection($db_host, $db_user, $db_pass);
+    $stmt = $pdo->prepare($query);
+
+    if ($stmt->execute() === false) {
+        die("sql error: $query");
+    }
+    return $stmt->rowCount();
+}
+
+function sql($query, $db_host = null, $db_user = null, $db_pass = null) {
+    // Used trim() and stripos() to catch cases like "  select " or "SELECT "
+    if (stripos(trim($query), "SELECT") === 0) {
+        return sql_read($query, $db_host, $db_user, $db_pass);
+    } else {
+        return sql_write($query, $db_host, $db_user, $db_pass);
+    }
 }