Mehrere Formularfunktionen in PHP:
Delete:
if ($_SERVER["REQUEST_METHOD"] == "POST" && isset($_POST["kunden_id"])) {
$kunden_id = $_POST["kunden_id"];
$sql = "DELETE FROM kunden WHERE kunden_id=$kunden_id";
if ($conn->query($sql) === TRUE) {
echo "Record deleted successfully";
}
else {
echo "Error deleting record: " . $conn->error;
}
}
$conn->close();
?>
Insert:
if ($_SERVER["REQUEST_METHOD"] == "POST") {
$vname = $conn->real_escape_string($_POST['vname']);
$nname = $conn->real_escape_string($_POST['nname']);
$age = $conn->real_escape_string($_POST['age']);
$sql = "INSERT INTO kunden (vname, nname, age) VALUES ('$vname', '$nname', '$age')";
if ($conn->query($sql) === TRUE) {
echo "Neuer Kunde erfolgreich hinzugefügt";
}
else {
echo "Fehler: " . $sql . "<br>" . $conn->error;
}
}
$conn->close();
?>
Update:
if ($_SERVER["REQUEST_METHOD"] == "POST" && isset($_POST["kunden_id"]) && isset($_POST["vname"]) && isset($_POST["nname"]) && isset($_POST["age"])) {
// Kunden-ID und neue Daten aus dem Formular abrufen
$kunden_id = $_POST["kunden_id"];
$vname = $_POST["vname"];
$nname = $_POST["nname"];
$age = $_POST["age"];
// SQL-Update-Statement vorbereiten
$sql = "UPDATE kunden SET vname='$vname', nname='$nname', age='$age' WHERE kunden_id=$kunden_id";
if ($conn->query($sql) === TRUE) {
echo "Record updated successfully";
}
else {
echo "Error updating record: " . $conn->error;
}
}
$conn->close();
?>
Search:
if (isset($_POST['search'])) {
$search = $_POST['search'];
$sql = "SELECT kunden_id, vname, nname, age FROM kunden WHERE nname LIKE '%$search%' ORDER BY kunden_id";
}
else {
$sql = "SELECT kunden_id, vname, nname, age FROM kunden ORDER BY kunden_id";
}
$result = $conn->query($sql);
if ($result->num_rows > 0) {
echo "<table border='1'>
<tr>
<th>Kunden ID</th>
<th>Vorname</th>
<th>Nachname</th>
<th>Alter</th>
</tr>";
while ($row = $result->fetch_assoc()) {
echo "<tr>
<td>" . $row["kunden_id"]. "</td>
<td>" . $row["vname"]. " </td>
<td>" . $row["nname"]. "</td>
<td>" . $row["age"]. "</td>
</tr>";
}
echo "</table>";
}
else {
echo "0 Ergebnisse";
}
$conn->close();
?>
<form method="post">
<input type="text" name="search" placeholder="Nachname eingeben...">
<button type="submit">Suchen</button>
</form>
