What potential issue could be causing empty entries when adding new data to a MySQL database using PHP?

The potential issue causing empty entries when adding new data to a MySQL database using PHP could be related to not properly binding the data to the prepared statement. To solve this issue, make sure to bind the data correctly before executing the query.

// Assuming $conn is the database connection object

// Prepare the SQL statement with placeholders
$stmt = $conn->prepare("INSERT INTO table_name (column1, column2) VALUES (?, ?)");

// Bind the data to the placeholders
$stmt->bind_param("ss", $data1, $data2);

// Assign values to the variables $data1 and $data2

$data1 = "Value1";
$data2 = "Value2";

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