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<? $strPath_Root = realpath("./includes/records/"); if (isset($_GET["id"]) == true && is_numeric($_GET["id"]) == true && strstr($strPath_Root, realpath($strPath_Root . $_GET["id"] . ".txt")) == true)  {   include("./includes/records/" . $_GET["id"] . ".txt");  } else  {   echo ("Explore, please?");  }?>