PHP Data Objects (PDO) Step By Step Tutorial - Part 3: Now, we test to connect to database. We use mysql server. Before test, please create a database named "test". Then create table "books" with query like this:
CREATE TABLE `books` (
`id` int(11) NOT NULL auto_increment,
`title` varchar(150) NOT NULL,
`author` varchar(150) NOT NULL,
`description` varchar(255) NOT NULL,
`on_sale` tinyint(1) NOT NULL,
PRIMARY KEY (`id`)
);
Following query for sample data:
INSERT INTO `books` (`id`, `title`, `author`, `description`, `on_sale`) VALUES (1, 'PHP AJAX', 'Andreas', 'This is good book for learning AJAX', 1);
INSERT INTO `books` (`id`, `title`, `author`, `description`, `on_sale`) VALUES (2, 'PHP Eclipse ', 'George', 'Nice book', 0);
INSERT INTO `books` (`id`, `title`, `author`, `description`, `on_sale`) VALUES (3, 'PHP Prado', 'Junyian', '-', 1);
INSERT INTO `books` (`id`, `title`, `author`, `description`, `on_sale`) VALUES (4, 'PHP Zend Framework', 'Ozulian', 'great', 0);
INSERT INTO `books` (`id`, `title`, `author`, `description`, `on_sale`) VALUES (5, 'PHP Web Services', 'Bobi', '', 0);
INSERT INTO `books` (`id`, `title`, `author`, `description`, `on_sale`) VALUES (6, 'PHP API', 'Hugo', '', 1);
INSERT INTO `books` (`id`, `title`, `author`, `description`, `on_sale`) VALUES (7, 'PHP SEO', 'Monteo', '', 1);
Now, this is sample connection to mysql database:
<?php
$host = "localhost";
$db = "test";
$user = "root";
$pass = "admin";
$conn = new PDO("mysql:host=$host;dbname=$db",$user,$pass);
$sql = "SELECT * FROM books";
$q = $conn->query($sql) or die("failed!");
while($r = $q->fetch(PDO::FETCH_ASSOC)){
echo $r['title'];
}
?>
