SQL query werkt niet in php wel in phpmyadmin

//Creates the table for pages and messages
$sql = "
CREATE TABLE IF NOT EXISTS `pages` (
`id` int NOT NULL AUTO_INCREMENT primary key,
`title` varchar(255) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=0 ;
";
$result = mysql_query($sql) or die("creating the table pages failed..");

$sql = "
CREATE TABLE IF NOT EXISTS `messages` (
`id` int AUTO_INCREMENT primary key NOT NULL,
`title` varchar(255) NOT NULL,
`description` text NOT NULL,
`page` varchar(255) NOT NULL,
`posting_date` datetime NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=0 ;
";
$result = mysql_query($sql) or die("creating the table messages failed..");
/********************************************
De query van messages maken werkt niet?
********************************************/
//This creates 2 pages and makes a message on the homepage and on the firstpage page.
$time = time();
$sql = "
INSERT INTO pages (title) VALUES ('Home');
INSERT INTO pages (title) VALUES ('firstpage');
INSERT INTO messages (title, description, page, posting_date) VALUES ('<h1>This is your first Message!</h1>', '<p>You can change this message if you like in the admin panel.</p>', 'home', '$time');
INSERT INTO messages (title, description, page, posting_date) VALUES ('<h1>Welcome to an example page!</h1>', '<p>This is just another test message and you can choose if you want to delete or modify this message in the admin panel.</p>', 'firstpage', '$time');
";
$result = mysql_query($sql) or die("SQL ERROR IN POST MAKING");