将数据插入到MySQL的使用库MySQLi和PDO
数据库和表创建之后，我们就可以开始将它们添加数据。
这里有一些语法规则可循：
- SQL查询必须在PHP中被引用
- 在SQL查询中字符串值必须加引号
- 数字值不能被引用
- 单词NULL不得被引用
INSERT INTO语句用于将新记录添加到一个MySQL表：
INSERT INTO table_name (column1, column2, column3,...)
VALUES (value1, value2, value3,...)
要了解更多有关SQL，请访问我们的SQL教程 。
在前面的章节中，我们创建了一个名为一个空表"MyGuests"有五列： "id" ， "firstname" ， "lastname" ， "email"和"reg_date" 。 现在，让我们填写表格与数据。
注：如果某列AUTO_INCREMENT (like the "id" column)或TIMESTAMP (like the "reg_date" column) ，这是没有必要的SQL查询中指定; MySQL会自动添加值。
下面的例子中添加新的记录到"MyGuests"表：
实施例(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();
?>
实施例(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);
?>
实施例(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;
?>