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- <?php
- function &getConnection(){
- $db = new PDO('sqlite:cars.sqlite');
- return $db;
- }
- function closeConnection ($db){
- $db = NULL;
- }
- //create the database if does not exist
- function createCarsTable($db){
- $db->exec("CREATE TABLE IF NOT EXISTS cars (id INTEGER PRIMARY KEY, manufacturer TEXT, year INTEGER, price INTEGER)");
- }
- function resetCarsTable($db){
- dropCarsTable($db);
- createCarsTable($db);
- loadDefaultCars($db);
- }
- function dropCarsTable($db){
- $db->exec("DROP TABLE IF EXISTS cars");
- }
- function loadDefaultCars($db){
- $query = $db->prepare('INSERT INTO cars (id, manufacturer, year, price) VALUES(:id, :manufacturer, :year, :price)');
- $data = array(
- array(
- 'id' => 1,
- 'manufacturer' => 'Honda',
- 'year' => 2010,
- 'price' => 200000
- ),
- array(
- 'id' => 2,
- 'manufacturer' => 'Jaguar',
- 'year' => 2012,
- 'price' => 400000
- ),
- array(
- 'id' => 3,
- 'manufacturer' => 'BMW',
- 'year' => 2000,
- 'price' => 75000
- ),
- array(
- 'id' => 4,
- 'manufacturer' => 'Mercedes',
- 'year' => 1980,
- 'price' => 1000
- )
- );
- foreach($data as $index => $value){
- $query->bindValue(':id', $value['id'], PDO::PARAM_INT);
- $query->bindValue(':manufacturer', $value['manufacturer'], PDO::PARAM_STR);
- $query->bindValue(':year', $value['year'], PDO::PARAM_INT);
- $query->bindValue(':price', $value['price'], PDO::PARAM_INT);
- $query->execute();
- }
- }
- function &loadCars($db){
- $select = $db->prepare('SELECT * FROM cars ORDER BY id ASC LIMIT 100');
- $select->execute();
- return $select;
- }
- function carsTableExists($db){
- $result = $db->query("SELECT COUNT(*) FROM sqlite_master WHERE type='table' AND name='cars'");
- $row = $result->fetch(PDO::FETCH_NUM);
- return $row[0] > 0;
- }
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