How can the looping structure in the PHP code be corrected to properly iterate over the data for insertion into the database?

The issue with the looping structure in the PHP code can be corrected by ensuring that the loop iterates over each row of data from the CSV file and properly inserts it into the database. This can be achieved by using a `while` loop to read each row of data from the CSV file and then executing an INSERT query for each row to insert the data into the database. 

<?php

$csvFile = 'data.csv';
$handle = fopen($csvFile, 'r');

// Check if the file is successfully opened
if ($handle !== false) {
    while (($data = fgetcsv($handle, 1000, ',')) !== false) {
        // Insert data into the database
        $query = "INSERT INTO table_name (column1, column2, column3) VALUES ('$data[0]', '$data[1]', '$data[2]')";
        
        // Execute the query
        // Note: You should use prepared statements to prevent SQL injection
        // $stmt = $pdo->prepare($query);
        // $stmt->execute();
    }
    
    fclose($handle);
} else {
    echo "Error opening file.";
}

?>

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