How can the server's resources affect the performance of a PHP script that involves repetitive database operations?

The server's resources, such as CPU and memory, can directly impact the performance of a PHP script that involves repetitive database operations. To improve performance, consider optimizing the database queries, caching results, and ensuring efficient use of resources.

// Example code snippet showing how to optimize database queries by using prepared statements

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

// Prepare a statement to be executed multiple times
$stmt = $pdo->prepare('SELECT * FROM users WHERE id = :id');

// Bind parameters and execute the query
for ($i = 1; $i <= 10; $i++) {
    $stmt->bindParam(':id', $i, PDO::PARAM_INT);
    $stmt->execute();
    
    // Process the results
    while ($row = $stmt->fetch()) {
        // Do something with the data
    }
}