<form action="menue.php" Method="POST">
<center>
<h1>Gallerie</h1>
<input type="submit" value="Neues Bild" name="neu">
<input type="submit" value="Löschen" name="delete">
</center>
</form>
<center>
<?php
error_reporting(E_ALL);
ini_set("display_errors", 1); 

$filename="Daten.csv";
$row =  0;
$bis = 20;

if(($datei = fopen($filename, "r"))!== false) {

    while(($data = fgetcsv($datei, 0, ";"))!== false) {
    
        if ($row < $bis){        
            echo "<img src=\"".$data[0]."\"><br>$data[1]<hr>\n";
            $row++;            
        }
    }
    fclose($datei);
}
?>
</center>
<?php
if(isset($_POST['neu'])) {
header ("Location: daten.php");
}
?>