$_get

<?php
session_start();
ob_start();

if(!isset($_SESSION['geb'])) {
if(isset($_POST['submit'])){
 if($_POST['geb'] == "marten"){
 echo "
 <a href='admin1.php?p=bew'>Bew</a><br><br>
<a href='admin1.php?p=ver'>Ver</a><br><br>
";

$_SESSION['geb'] == 1;

if($_SESSION['geb'] == 1){
 
if(($_GET['p']) AND ($_GET['p'] == "bew")){
 echo "bew";
 exit;
}
if(($_GET['p']) AND ($_GET['p'] == "ver")){
 echo "ver";
 exit;
}
}
else{
 echo "kutsession";
}
}
else{
 echo "not good";
}
}
else{
?>
<form method='post' action=''><input type='text' name='geb'> <input type='submit' name='submit'></form>
<?php
}
}
?>

<?php
session_start();
ob_start();
 
if(!isset($_SESSION['geb'])) {
if(isset($_POST['submit'])){
 if($_POST['geb'] == "marten"){
 echo "
 <a href='admin1.php?p=bew'>Bew</a><br><br>
<a href='admin1.php?p=ver'>Ver</a><br><br>
";
 
$_SESSION['geb'] == 1;
 
if($_SESSION['geb'] == 1){
 
if(($_GET['p']) AND ($_GET['p'] == "bew")){
 echo "bew";
 exit;
}
if(($_GET['p']) AND ($_GET['p'] == "ver")){
 echo "ver";
 exit;
}
}
else{
 echo "kutsession";
}
}
else{
 echo "not good";
}
}
else{
?>
<form method='post' action=''><input type='text' name='geb'> <input type='submit' name='submit'></form>
<?php
}
}
?>