PHP MySQL insert multiple pieces of data

We learned how to add data to the data table in the previous section, one by one. Can we add more pieces of data at a time? That's for sure. In this section, we will learn how to add multiple pieces of data at once.

mysqli_multi_query() function can be used to execute multiple SQL statements.

Let us look directly at the example

Example

Added three new records to our previous "MyGuests" table:

<?php
 header("Content-type:text/html;charset=utf-8");    //设置编码
 $servername = "localhost";
 $username = "root";
 $password = "root";
 $dbname = "test";
 
 // 创建链接
 $conn = mysqli_connect($servername, $username, $password, $dbname);
 // 检查链接
 if (!$conn) {
     die("连接失败: " . mysqli_connect_error());
 }
 
 $sql = "INSERT INTO MyGuests (firstname, lastname, email)
 VALUES ('tom', 'Doe', '12032047@asd.com');";
 $sql .= "INSERT INTO MyGuests (firstname, lastname, email)
 VALUES ('Mary', 'Moe', 'mary@example.com');";
 $sql .= "INSERT INTO MyGuests (firstname, lastname, email)
 VALUES ('Julie', 'Dooley', 'julie@example.com')";
 
 if (mysqli_multi_query($conn, $sql)) {
     echo "新记录插入成功";
 } else {
     echo "Error: " . $sql . "<br>" . mysqli_error($conn);
 }
 
 mysqli_close($conn);
 ?>

Program running results:

New records inserted Success

Open your data table and take a look:

There are three more new data.

Using prepared statements

The mysqli extension provides a second way to insert statements.

We can prepare statements and bind parameters.

mysql extension can send statements or queries to the mysql database without data. You can nematically associate or "bind" variables.

Example

<?php
 header("Content-type:text/html;charset=utf-8");    //设置编码
 $servername = "localhost";
 $username = "root";
 $password = "root";
 $dbname = "test";
 
 // 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);
 } else {
     $sql = "INSERT INTO MyGuests VALUES(?, ?, ?)";
 
     // 为 mysqli_stmt_prepare() 初始化 statement 对象
     $stmt = mysqli_stmt_init($conn);
 
     //预处理语句
     if (mysqli_stmt_prepare($stmt, $sql)) {
         // 绑定参数
         mysqli_stmt_bind_param($stmt, 'sss', $firstname, $lastname, $email);
 
         // 设置参数并执行
         $firstname = 'liu';
         $lastname = 'Doe';
         $email = 'john@example.com';
         mysqli_stmt_execute($stmt);
 
         $firstname = 'zhang';
         $lastname = 'Moe';
         $email = 'mary@example.com';
         mysqli_stmt_execute($stmt);
 
         $firstname = 'li';
         $lastname = 'Dooley';
         $email = 'julie@example.com';
         mysqli_stmt_execute($stmt);
     }
 }
 ?>

VALUESIt is not followed by specific data, but with? Instead, how many are on top? , the preprocessing statement mysqli_stmt_bind_param($stmt, 'sss', $firstname, $lastname, $email), the second parameter must have several "s", and the second parameter represents Data type: s represents a string, and there are the following types:

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