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Inserting Data into a MySQL Database using PHP

Inserting Data into a MySQL Database using PHP

In this tutorial, we will learn how to insert data into a MySQL database using PHP. We will be using the mysqli extension, which is a more improved version of the mysql extension.

Prerequisites

Before we start, you will need the following:

  • A MySQL database
  • A PHP development environment
  • The mysqli extension installed

Creating a MySQL Database

If you do not already have a MySQL database, you can create one by following these steps:

  1. Log in to your MySQL server using the following command:


    2. mysql -u root -p

  2. Create a new database using the following command:


    3. CREATE DATABASE database_name;

  3. Select the newly created database using the following command:


    4. USE database_name;

Creating a Table

Next, we need to create a table to store our data. We can do this using the following command:


CREATE TABLE table_name (
column_name1 data_type,
column_name2 data_type,
...
);

For example, to create a table to store user data, we can use the following command:


CREATE TABLE users (
id INT NOT NULL AUTO_INCREMENT,
username VARCHAR(255) NOT NULL,
password VARCHAR(255) NOT NULL,
email VARCHAR(255) NOT NULL,
PRIMARY KEY (id)
);

Inserting Data

Now that we have created a table, we can insert data into it using the following syntax:


INSERT INTO table_name (column_name1, column_name2, ...)
VALUES (value1, value2, ...);

For example, to insert a new user into the users table, we can use the following command:


INSERT INTO users (username, password, email)
VALUES ('john', 'doe', 'john@example.com');

mysqli_query() Function

The mysqli_query() function is used to execute SQL queries on a MySQL database. The function takes two parameters:

  • The MySQL connection
  • The SQL query to execute

The function returns a boolean value indicating whether the query was executed successfully.

Example

Here is an example of how to insert data into a MySQL database using PHP:


connect_error) {
die('Connect Error (' . $mysqli->connect_errno . ') '
. $mysqli->connect_error);
}

// Prepare the SQL query
$sql = "INSERT INTO users (username, password, email)
VALUES (?, ?, ?)";

// Prepare the statement
$stmt = $mysqli->prepare($sql);

// Bind the parameters
$stmt->bind_param('sss', $username, $password, $email);

// Set the parameter values
$username = 'john';
$password = 'doe';
$email = 'john@example.com';

// Execute the statement
$stmt->execute();

// Close the statement
$stmt->close();

// Close the connection
$mysqli->close();
?>

Conclusion

In this tutorial, we learned how to insert data into a MySQL database using PHP. We covered the following topics:

  • Creating a MySQL database
  • Creating a table
  • Inserting data using the mysqli_query() function

I hope this tutorial has been helpful. If you have any questions, please feel free to leave a comment below.


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