Es gibt mir einen weißen bildschirm zurück
<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "regressiontest";
try {
$conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
switch($operation){
case "managerList": {
$stmt = $conn->query("
SELECT
*
FROM
regressiontest.campaign_run;");
} break;
}
$stmt->execute();
$result = $stmt->setFetchMode(PDO::FETCH_ASSOC);
$output = $stmt->fetchAll();
switch($compute){
case "json": {
echo json_encode($output, JSON_NUMERIC_CHECK);
}
}
}
catch(PDOException $e) {
echo "Error: " . $e->getMessage();
}
$conn = null;
?>