Hapus Data Dari Tabel MySQL Menggunakan MySQLi dan PDO
Pernyataan DELETE digunakan untuk menghapus record dari tabel:
DELETE FROM table_name
WHERE some_column = some_value
Perhatikan klausa WHERE dalam sintaks DELETE: Klausa WHERE menentukan record atau record mana yang harus dihapus. Jika dihilangkan klausa WHERE, semua record akan dihapus!
Mari kita lihat tabel “MyGuests”:
| id | firstname | lastname | reg_date | |
|---|---|---|---|---|
| 1 | John | Doe | john@example.com | 2014-10-22 14:26:15 |
| 2 | Mary | Moe | mary@example.com | 2014-10-23 10:22:30 |
| 3 | Julie | Dooley | julie@example.com | 2014-10-26 10:48:23 |
Contoh berikut menghapus record dengan id = 3 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 untuk menghapus record $sql = "DELETE FROM MyGuests WHERE id=3"; if ($conn->query($sql) === TRUE) { echo "Record deleted successfully"; } else { echo "Error deleting 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 untuk menghapus record
$sql = "DELETE FROM MyGuests WHERE id=3";
if (mysqli_query($conn, $sql)) {
echo "Record deleted successfully";
} else {
echo "Error deleting record: " . mysqli_error($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 error PDO ke exceptions $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); // sql untuk menghapus record $sql = "DELETE FROM MyGuests WHERE id=3"; // gunakan exec() karena tidak ada hasil yang dikembalikan $conn->exec($sql); echo "Record deleted successfully"; } catch(PDOException $e) { echo $sql . "<br>" . $e->getMessage(); } $conn = null; ?>
Setelah record dihapus, tabel akan terlihat seperti ini:
| id | firstname | lastname | reg_date | |
|---|---|---|---|---|
| 1 | John | Doe | john@example.com | 2014-10-22 14:26:15 |
| 2 | Mary | Moe | mary@example.com | 2014-10-23 10:22:30 |
