將數據插入到MySQL的使用庫MySQLi和PDO
數據庫和表創建之後，我們就可以開始將它們添加數據。
這裡有一些語法規則可循：
- SQL查詢必須在PHP中被引用
- 在SQL查詢中字符串值必須加引號
- 數字值不能被引用
- 單詞NULL不得被引用
INSERT INTO語句用於將新記錄添加到一個MySQL表：
INSERT INTO table_name (column1, column2, column3,...)
VALUES (value1, value2, value3,...)
要了解更多有關SQL，請訪問我們的SQL教程 。
在前面的章節中，我們創建了一個名為一個空表"MyGuests"有五列： "id" "firstname" ， "lastname" ， "email"和"reg_date" 現在，讓我們填寫表格與數據。
注：如果某列AUTO_INCREMENT (like the "id" column)或TIMESTAMP (like the "reg_date" column) ，這是沒有必要的SQL查詢中指定; MySQL會自動添加值。
下面的例子中添加新的記錄到"MyGuests"表：
實施例(MySQLi Object-oriented)
<?php
$servername = "localhost";
$username = "username";
$password =
"password";
$dbname =
"myDB";
// Create connection
$conn =
new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "INSERT INTO
MyGuests (firstname, lastname, email)
VALUES ('John', 'Doe', '[email protected]')";
if ($conn->query($sql) === TRUE) {
echo "New
record created successfully";
} else {
echo
"Error: " . $sql . "<br>" . $conn->error;
}
$conn->close();
?>
實施例(MySQLi Procedural)
<?php
$servername = "localhost";
$username = "username";
$password =
"password";
$dbname =
"myDB";
// Create connection
$conn = mysqli_connect($servername, $username, $password,
$dbname);
// Check connection
if (!$conn) {
die("Connection
failed: " . mysqli_connect_error());
}
$sql = "INSERT INTO
MyGuests (firstname, lastname, email)
VALUES ('John', 'Doe', '[email protected]')";
if (mysqli_query($conn, $sql)) {
echo "New
record
created successfully";
} else {
echo "Error: "
. $sql . "<br>" . mysqli_error($conn);
}
mysqli_close($conn);
?>
實施例(PDO)
<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname =
"myDBPDO";
try {
$conn = new PDO("mysql:host=$servername;dbname=$dbname",
$username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE,
PDO::ERRMODE_EXCEPTION);
$sql = "INSERT INTO
MyGuests (firstname, lastname, email)
VALUES ('John', 'Doe', '[email protected]')";
// use exec() because no
results are returned
$conn->exec($sql);
echo "New record created successfully";
}
catch(PDOException $e)
{
echo $sql . "<br>" . $e->getMessage();
}
$conn = null;
?>