What are best practices for handling database queries within loops in PHP to improve efficiency and maintainability?

When handling database queries within loops in PHP, it is best to minimize the number of queries executed to improve efficiency. One way to achieve this is by fetching all the necessary data before entering the loop and then iterating over the fetched results within the loop. This approach reduces the overhead of making multiple queries and can significantly improve performance. 

// Fetch data before entering the loop
$query = "SELECT * FROM table";
$result = $pdo->query($query);
$data = $result->fetchAll();

// Iterate over the fetched results within the loop
foreach ($data as $row) {
    // Access $row data as needed
}

Keywords

database queries loops efficiency maintainability PHP functions

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