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Showing posts from July, 2015

Speeding up database calls with PDO and iterators

When you review lots of code, you often wonder why things were written the way they were. Especially when making expensive calls to a database, I still see things that could and should be improved.
No framework development When working with a framework, mostly these database calls are optimized for the developer and abstract the complex logic to improve and optimize the retrieval and usage of data. But then developers need to build something without a framework and end up using the basics of PHP in a sub-optimal way.

$pdo = new \PDO( $config['db']['dsn'], $config['db']['username'], $config['db']['password'] ); $sql = 'SELECT * FROM `gen_contact` ORDER BY `contact_modified` DESC'; $stmt = $pdo->prepare($sql); $stmt->execute(); $data = $stmt->fetchAll(\PDO::FETCH_OBJ); echo 'Getting the contacts that changed the last 3 months' . PHP_EOL; foreach ($data as $row) { $dt = new \DateTime('2015-04-…