Undefined index: action

Question

Die markierte Linie ist die Linie 24

Notice: Undefined index: Aktion in C: \ xampp \ htdocs \ authors.php on line 24

**if($_GET['action'] == "list") {** 
     $current = "members"; 
     $list = "members"; 
    } 
    else if($_GET["list"] == "authors") $current = "authors"; 
    else $current = "members"; 

Answer 1

Prüfen Sie zuerst, ob $_GET['action'] gewesen Set oder nicht

if(isset($_GET['action'])) { 

    if($_GET['action'] == "list") { 
     $current = "members"; 
     $list = "members"; 
    } else if($_GET["list"] == "authors") { 
     $current = "authors"; 
    } else { 
     $current = "members"; 
    } 

}