PHP

Update Data dari Database di PHP MySQL

Update Data Pada Tabel MySQL Menggunakan MySQLi dan PDO

Pernyataan UPDATE digunakan untuk memperbarui catatan yang ada dalam tabel:

UPDATE nama_tabel
SET kolom1 = nilai, kolom2 = nilai2, …
WHERE some_column = some_value

Perhatikan klausa WHERE dalam sintaks UPDATE: Klausa WHERE menentukan record atau record mana yang harus diperbarui. Jika dilangkan klausa WHERE, semua record akan diperbarui!

Mari kita lihat tabel “MyGuests”:

idfirstnamelastnameemailreg_date
1JohnDoejohn@example.com2014-10-22 14:26:15
2MaryMoemary@example.com2014-10-23 10:22:30

Contoh berikut memperbarui record dengan id = 2 di tabel “MyGuests”:

Contoh (MySQLi Object-oriented) :

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

// Buat Koneksi
$conn = new mysqli($servername, $username, $password, $dbname);
// Periksa Koneksi
if ($conn->connect_error) {
  die("Connection failed: " . $conn->connect_error);
}

$sql = "UPDATE MyGuests SET lastname='Doe' WHERE id=2";

if ($conn->query($sql) === TRUE) {
  echo "Record updated successfully";
} else {
  echo "Error updating record: " . $conn->error;
}

$conn->close();
?>

Contoh (MySQLi Prosedural) :

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

// Buat Koneksi
$conn = mysqli_connect($servername, $username, $password, $dbname);
// Periksa Koneksi
if (!$conn) {
  die("Connection failed: " . mysqli_connect_error());
}

$sql = "UPDATE MyGuests SET lastname='Doe' WHERE id=2";

if (mysqli_query($conn, $sql)) {
  echo "Record updated successfully";
} else {
  echo "Error updating record: " . mysqli_error($conn);
}

mysqli_close($conn);
?>

Contoh (PDO) :

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDBPDO";

try {
  $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
  // mengatur mode kesalahan PDO ke pengecualian
  $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

  $sql = "UPDATE MyGuests SET lastname='Doe' WHERE id=2";

  // Prepare statement
  $stmt = $conn->prepare($sql);

  // eksekusi query
  $stmt->execute();

  // echo pesannya untuk mencetak UPDATE Sukses
  echo $stmt->rowCount() . " records UPDATED successfully";
} catch(PDOException $e) {
  echo $sql . "<br>" . $e->getMessage();
}

$conn = null;
?>

Setelah record diperbarui, tabel akan terlihat seperti ini:

idfirstnamelastnameemailreg_date
1JohnDoejohn@example.com2014-10-22 14:26:15
2MaryDoemary@example.com2014-10-23 10:22:30

Hanifah Nurbaeti

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Tags: mysqlphp