How can one efficiently populate an object within another object in PHP without additional queries?

When populating an object within another object in PHP without additional queries, you can use a JOIN query to fetch the related data in a single query. By using a JOIN, you can retrieve the necessary information from multiple tables and populate the object efficiently. 

// Assuming you have two objects $parentObject and $childObject
$query = "SELECT * FROM parent_table 
          JOIN child_table ON parent_table.child_id = child_table.id 
          WHERE parent_table.id = :parent_id";

$stmt = $pdo->prepare($query);
$stmt->execute(['parent_id' => $parentObject->getId()]);

$row = $stmt->fetch(PDO::FETCH_ASSOC);

$parentObject->setChildObject(new Child($row['child_id'], $row['child_name']));

Keywords

PHP object nested efficient queries

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