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Database Management - Lecture 4 - PHP and Mysql
- 4. Connection
$conn = new mysqli(server, username, password,
dbname);
$conn = mysqli_connect(server, username, password,
dbname);
- 6. Select OOP
$sql = "SELECT id, firstname, lastname FROM MyGuests";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
while($row = $result->fetch_assoc()) {
echo "id: " . $row["id"];
}
} else {
echo "0 results";
}
- 7. Select Procedural
$sql = "SELECT * FROM students";
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0) {
while($row = mysqli_fetch_assoc($result)) {
echo "id: " . $row["id"];
}
} else {
echo "0 results";
}
- 8. Insert
$sql = "INSERT INTO users(firstname, lastname, email)
VALUES ('John', 'Doe', 'john@example.com')";
mysqli_query($conn, $sql)