What potential pitfalls should be considered when designing a PHP-based image gallery with MySQL integration?

One potential pitfall to consider when designing a PHP-based image gallery with MySQL integration is the risk of SQL injection attacks if user input is not properly sanitized. To prevent this, always use prepared statements or parameterized queries when interacting with the MySQL database to avoid malicious code execution. 

// Example of using prepared statements to prevent SQL injection

// Establish a connection to the MySQL database
$mysqli = new mysqli("localhost", "username", "password", "database");

// Prepare a SQL statement with a placeholder for user input
$stmt = $mysqli->prepare("SELECT * FROM images WHERE category = ?");

// Bind user input to the placeholder
$category = $_POST['category'];
$stmt->bind_param("s", $category);

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

// Process the results
$result = $stmt->get_result();
while ($row = $result->fetch_assoc()) {
    // Display or process the image data
}

// Close the statement and database connection
$stmt->close();
$mysqli->close();

Keywords

PHP MySQL image gallery security vulnerabilities SQL injection

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