What best practices should be followed when handling arrays and database insertions in PHP?

When handling arrays and database insertions in PHP, it is important to properly sanitize and validate the data before inserting it into the database to prevent SQL injection attacks. Additionally, using prepared statements can help prevent these attacks and improve performance by reusing query execution plans. 

// Sample code snippet for handling arrays and database insertions in PHP

// Assuming $data is an array containing the data to be inserted into the database

// Connect to the database
$pdo = new PDO('mysql:host=localhost;dbname=mydatabase', 'username', 'password');

// Prepare the SQL query using prepared statements
$stmt = $pdo->prepare("INSERT INTO mytable (column1, column2) VALUES (:value1, :value2)");

// Loop through the data array and insert each record into the database
foreach ($data as $record) {
    // Sanitize and validate the data before binding parameters
    $value1 = filter_var($record['value1'], FILTER_SANITIZE_STRING);
    $value2 = filter_var($record['value2'], FILTER_SANITIZE_STRING);

    // Bind the parameters and execute the query
    $stmt->bindParam(':value1', $value1);
    $stmt->bindParam(':value2', $value2);
    $stmt->execute();
}

Keywords

arrays database insertions PHP SQL injection prepared statements

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