What are some potential pitfalls when importing data from a CSV file into a database table using PHP?

One potential pitfall when importing data from a CSV file into a database table using PHP is not properly sanitizing the input data, which can lead to SQL injection attacks. To prevent this, it is important to use prepared statements to insert data into the database. Additionally, handling errors during the import process is crucial to ensure that the data is imported correctly. 

<?php
// Establish a database connection
$pdo = new PDO('mysql:host=localhost;dbname=database', 'username', 'password');

// Open the CSV file for reading
$file = fopen('data.csv', 'r');

// Prepare a SQL statement for inserting data
$stmt = $pdo->prepare("INSERT INTO table_name (column1, column2) VALUES (:value1, :value2)");

// Loop through each row in the CSV file
while (($data = fgetcsv($file)) !== false) {
    // Bind the values from the CSV file to the prepared statement
    $stmt->bindParam(':value1', $data[0]);
    $stmt->bindParam(':value2', $data[1]);
    
    // Execute the prepared statement
    $stmt->execute();
}

// Close the CSV file and database connection
fclose($file);
$pdo = null;
?>

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