$pdo = new PDO('mysql:host=localhost;dbname=mydb', 'username', 'password'); $table = 'mytable'; $data = $pdo->query("SELECT * FROM $table")->fetchAll(PDO::FETCH_ASSOC); print_r($data);In this example, we're using PDO to connect to a MySQL database and retrieve all the data from a table called "mytable". We then use the fetchAll method to convert the results to an associative array and store it in the $data variable. Finally, we use print_r to print out the contents of the array. It's difficult to determine a specific package or library without more information, as there are many PHP libraries and frameworks that could potentially include an exportArray function. However, it's likely that this function would be part of a library specifically designed for working with databases, such as Doctrine or Laravel's Eloquent ORM.