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Home php codes Export MySQL database using PHP

Export MySQL database using PHP


Welcome back to, today we will see how to export database with the help of php script.
It is always a good practice to take backup of database regularly. There are usually three way to take backup of
Export MySQL database using PHP

1.using SQL Command through PHP.
2.Using phpmyadmin interface.
3.Using mysqldump through php.
Today we will right a php script that will help to export database.

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all you should need to provide database credentials to the function, as well as an array of tables you’d like to backup.
after making a connection we will run some MySQL command in our script that will help us to export our data.

// Database configuration
$host = "localhost";
$username = "root";
$password = "";
$database_name = "find";
// Get connection object and set the charset
$conn = mysqli_connect($host, $username, $password, $database_name);
// Get All Table Names From the Database
$tables = array();
$sql = "SHOW TABLES";
$result = mysqli_query($conn, $sql);
while ($row = mysqli_fetch_row($result)) {
    $tables[] = $row[0];
$sqlScript = "";
foreach ($tables as $table) {
        // Prepare SQLscript for creating table structure
    $query = "SHOW CREATE TABLE $table";
    $result = mysqli_query($conn, $query);
    $row = mysqli_fetch_row($result);
    $sqlScript .= "\n\n" . $row[1] . ";\n\n";
    $query = "SELECT * FROM $table";
    $result = mysqli_query($conn, $query);
    $columnCount = mysqli_num_fields($result);
    // Prepare SQLscript for dumping data for each table
    for ($i = 0; $i < $columnCount; $i ++) {
        while ($row = mysqli_fetch_row($result)) {
            $sqlScript .= "INSERT INTO $table VALUES(";
            for ($j = 0; $j < $columnCount; $j ++) {
                $row[$j] = $row[$j];
             if (isset($row[$j])) {
                    $sqlScript .= '"' . $row[$j] . '"';
                } else {
                    $sqlScript .= '""';
                if ($j < ($columnCount - 1)) {
                    $sqlScript .= ',';
            $sqlScript .= ");\n";
    $sqlScript .= "\n"; 

    // Save the SQL script to a backup file
    $backup_file_name = $database_name . '_backup_' . time() . '.sql';
    $fileHandler = fopen($backup_file_name, 'w+');
    $number_of_lines = fwrite($fileHandler, $sqlScript);
 // Download the SQL backup file to the browser
    header('Content-Description: File Transfer');
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename=' . basename($backup_file_name));
    header('Content-Transfer-Encoding: binary');
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: public');
    header('Content-Length: ' . filesize($backup_file_name));
    exec('rm ' . $backup_file_name); 

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