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Export MySQL data into CSV using PHP

To fetch data from a MySQL database and export it to CSV using PHP, you can follow these steps:

// Database connection details
$servername = "localhost";
$username = "your_username";
$password = "your_password";
$dbname = "your_database_name";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);

// Fetch data from your table
$sql = "SELECT * FROM your_table";
$result = $conn->query($sql);

// Check if any rows are returned
if ($result->num_rows > 0) {
    // Define CSV filename
    $filename = "exported_data.csv";

    // Set headers for CSV download
    header('Content-Type: text/csv');
    header('Content-Disposition: attachment; filename="' . $filename . '"');

    // Create a file pointer connected to the output stream
    $output = fopen('php://output', 'w');

    // Output CSV header
    $header = array('ID', 'Name', 'Email');
    fputcsv($output, $header);

    // Output data from rows
    while ($row = $result->fetch_assoc()) {
        fputcsv($output, $row);

    // Close the file pointer
} else {
    echo "No data found";

// Close the database connection

  1. Database Connection: Replace your_username, your_password, your_database_name, and your_table with your actual database credentials and table name.
  2. Fetch Data: The SQL query retrieves data from the specified table.
  3. CSV Headers: The header function is used to set headers for CSV download.
  4. CSV File Creation: We use fopen to create a file pointer connected to the output stream (php://output). Then, fputcsv is used to write the CSV header and data.
  5. Download CSV: Headers are set to prompt the user to download the CSV file with the specified filename.
When you run this script, it will fetch data from your MySQL table and export it to a CSV file, which will be downloaded by the user.


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