<b>BOOK ISBN: </b><input type="text" name="INPUT_BISBN"><br>
<br>
<input type="submit" name="BOOK_ADDBTN" value="ADD BOOK"><br>
</form>
';
//ARRAY OF ALLOWED GENRES
$ALLOWED_GENRES = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18);
//IF BUTTON PRESSED
if (isset($_POST['BOOK_ADDBTN'])) {
//CHECK FIELDS
if (isset($_POST['INPUT_BNAME']) and isset($_POST['INPUT_BAUTHOR']) and isset($_POST['INPUT_BGENRE']) and isset($_POST['INPUT_BISBN'])) {
//CHECK FOR ALLOWED GENRES
if (in_array($_POST['INPUT_BGENRE'], $ALLOWED_GENRES)) {
$BOOK_INPUTS = array('NAME' => $_POST['INPUT_BNAME'], 'AUTHOR' => $_POST['INPUT_BAUTHOR'], 'GENRE' => $_POST['INPUT_BGENRE'], 'UNIQ' => uniqid(rand(1, 99999) . rand(1, 99999), true), 'ISBN' => $_POST['INPUT_BISBN']);
//EXECUTE ADDBOOK FUNCTION
if (addbook($BOOK_INPUTS['NAME'], $BOOK_INPUTS['AUTHOR'], $BOOK_INPUTS['GENRE'], $BOOK_INPUTS['ISBN']) === true) {
echo 'ADDITION OF ' . $BOOK_INPUTS['NAME'] . ' WAS SUCESSFUL';
} else {
echo 'ADDITION OF <b>' . $BOOK_INPUTS['NAME'] . '</b> WAS NOT SUCESSFUL';
}
} else {
echo 'FORM ERROR';
$ADDBOOK_QUERY->close();
}
} else {
echo 'FORM ERROR';
$ADDBOOK_QUERY->close();
}
}
echo '</center>';
} elseif ($_GET['page'] == '3') {
<?php
include '../includes/config.php';
if ($_SERVER["REQUEST_METHOD"] == "POST") {
$bookid = $_POST["book"];
$price = $_POST["price"];
addbook($bookid, $price);
render("thanks.php", ["message" => "Thankyou for letting us know"]);
} else {
redirect("/");
}