What are common pitfalls when exporting a database using PHP scripts, and how can they be avoided?

Common pitfalls when exporting a database using PHP scripts include not properly sanitizing user input, not handling errors effectively, and not optimizing the export process for large databases. To avoid these pitfalls, always sanitize user input to prevent SQL injection attacks, implement error handling to catch and handle any potential issues during the export process, and consider using pagination or chunking techniques for exporting large datasets. 

// Example of sanitizing user input before using it in a database query
$user_input = $_POST['user_input'];
$sanitized_input = mysqli_real_escape_string($connection, $user_input);

// Example of implementing error handling during database export
if (!$result) {
    die('Error exporting database: ' . mysqli_error($connection));
}

// Example of optimizing database export for large datasets using pagination
$limit = 1000;
$page = isset($_GET['page']) ? $_GET['page'] : 1;
$offset = ($page - 1) * $limit;

$query = "SELECT * FROM table LIMIT $offset, $limit";
$result = mysqli_query($connection, $query);

// Loop through and export data
while ($row = mysqli_fetch_assoc($result)) {
    // Export data here
}

Keywords

SQL injection mysqli_real_escape_string error handling data validation database backup.

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