PHP MySQL 插入数据

PHP MySQL 插入数据使用 MySQLi 和 PDO 向 MySQL 插入数据在创建完数据库和表后，我们可以向表中添加数据。以下为一些语法规则：PHP 中 SQL 查询语句必须使用引号在 SQL 查询语句中的字符串值必须加引号数值的值不需要引号NULL 值不需要引号 INSERT INTO 语句通常用于向 MySQL 表添加新的记录：INSERT INTO table_name (column1, column2, column3,...)VALUES (value1, value2, value3,...)学习更多关于 SQL 知识，请查看我们的 SQL 教程。在前面的几个章节中我们已经创建了表 "MyGuests"，表字段有:





"id", "firstname", "lastname", "email" 和 "reg_date"。现在，让我们开始向表填充数据。注意： 如果列设置 AUTO_INCREMENT (如 "id" 列) 或 TIMESTAMP(如 "reg_date" 列),，我们就不需要在 SQL 查询语句中指定值； MySQL 会自动为该列添加值。以下实例向 "MyGuests" 表添加了新的记录:





实例 (MySQLi - 面向对象)<?php$servername = "localhost";$username = "username";$password = "password";$dbname = "myDB";// 创建连接$conn = new mysqli($servername, $username, $password, $dbname);// 检测连接if ($conn->connect_error) {die("连接失败:





" . $conn->connect_error);}$sql = "INSERT INTO MyGuests (firstname, lastname, email)VALUES ('John', 'Doe', 'john@example.com')";if ($conn->query($sql) === TRUE) {echo "新记录插入成功";} else {echo "Error:





" . $sql . "<br>" . $conn->error;}$conn->close();?>实例 (MySQLi - 面向过程)<?php$servername = "localhost";$username = "username";$password = "password";$dbname = "myDB";// 创建连接$conn = mysqli_connect($servername, $username, $password, $dbname);// 检测连接if (!$conn) {die("Connection failed:





" . mysqli_connect_error());}$sql = "INSERT INTO MyGuests (firstname, lastname, email)VALUES ('John', 'Doe', 'john@example.com')";if (mysqli_query($conn, $sql)) {echo "新记录插入成功";} else {echo "Error:





" . $sql . "<br>" . mysqli_error($conn);}mysqli_close($conn);?>实例 (PDO)<?php$servername = "localhost";$username = "username";$password = "password";$dbname = "myDBPDO";try {$conn = new PDO("mysql:





host=$servername;dbname=$dbname", $username, $password);// 设置 PDO 错误模式，用于抛出异常$conn->setAttribute(PDO:





:





ATTR_ERRMODE, PDO:





:





ERRMODE_EXCEPTION);$sql = "INSERT INTO MyGuests (firstname, lastname, email)VALUES ('John', 'Doe', 'john@example.com')";// 使用 exec() ，没有结果返回 $conn->exec($sql);echo "新记录插入成功";}catch(PDOException $e){echo $sql . "<br>" . $e->getMessage();}$conn = null;?>