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listofbooks.php
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listofbooks.php
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<?php
session_start();
$count = 0;
if (!(isset($_GET['pagenum']))){
$pagenum = 1;
} else{
$pagenum = $_GET['pagenum'];
}
// connecto database
require_once "./functions/database_functions.php";
$conn = db_connect();
$query = "SELECT book_isbn, book_image FROM books";
$title = "Full Catalogs of Books";
require_once "./template/menu.php";
if(isset($_GET['searchBox']) && $_GET['searchBox']!=""){
$query .= " where (book_title LIKE '%" . $_GET['searchBox'] . "%' OR book_author LIKE '%" . $_GET['searchBox'] . "%') ";
}
if(isset($_GET['category']) && $_GET['category']!="All"){
if((isset($_GET['searchBox']) && $_GET['searchBox']=="") || !isset($_GET['searchBox'])){
$query .= " where category_id_fk=".$_GET['category'];
} else {
$query .= " and category_id_fk=".$_GET['category'];
}
}
if(isset($_GET['publisher']) && $_GET['publisher']!='All'){
if((isset($_GET['searchBox']) && isset($_GET['publisher']) && $_GET['searchBox']=="" && $_GET['category']=="All")||!isset($_GET['searchBox']) ){
$query .= " where publisherid=".$_GET['publisher'];
} else {
$query .= " AND publisherid=".$_GET['publisher'];
}
}
$result = mysqli_query($conn, $query);
if(!$result){
echo "Can't retrieve data " . mysqli_error($conn);
exit;
}
//echo $result;
$rows = mysqli_num_rows($result);
if($rows>0){
// //This is the number of results displayed per page
$page_rows = 12;
//This tells us the page number of our last page
$last = ceil($rows/$page_rows);
if ($pagenum < 1){
$pagenum = 1;
}
elseif ($pagenum > $last){
$pagenum = $last;
}
$max = ' limit ' .($pagenum - 1) * $page_rows .',' .$page_rows;
$query .= $max;
$result = mysqli_query($conn, $query);
if(!$result){
echo "Can't retrieve data " . mysqli_error($conn);
exit;
}
}
$queryForCategory="SELECT * from category";
$resultForCategory = mysqli_query($conn, $queryForCategory);
$queryForPublisher="SELECT * from publisher";
$resultForPublisher = mysqli_query($conn, $queryForPublisher);
?>
<p class="lead text-center text-muted">Full Catalogs of Books</p>
<form action="listofbooks.php">
<div class="border row col-md-6 boxlayout">
<div class="border col-md-3"> <input type="text" name="searchBox" style="width:350px" placeholder="Search by title of book or author name"
<?php if (isset($_GET['search']) && $_GET['searchBox']!="") {
echo 'value='.$_GET['searchBox'];
} ?>
/> </div>
<div class="border col-md-3">
<select name="category">
<option value="All">All Categories</option>
<?php while($category = mysqli_fetch_assoc($resultForCategory)){ ?>
<option value="<?php echo $category["category_id_pk"]?>" <?php
if (isset($_GET['category']) && $_GET['category']==$category["category_id_pk"]) {
echo 'selected="selected"';
}
?>>
<?php echo $category["name"]?>
</option>
<?php }?>
</select>
</div>
<div class="border col-md-3">
<select style="width: 200px" name="publisher">
<option value="All">All Publishers</option>
<?php while($publisher = mysqli_fetch_assoc($resultForPublisher)){ ?>
<option value="<?php echo $publisher["publisherid"]?>" <?php
if (isset($_GET['publisher']) && $_GET['publisher']==$publisher["publisherid"]) {
echo 'selected="selected"';
}
?>>
<?php echo $publisher["publisher_name"]?>
</option>
<?php }?>
</select>
</div>
<div class="border col-md-3"> <input type="submit" name="search" value="Search"> </div>
</div>
</form>
<?php
for($i = 0; $i < mysqli_num_rows($result); $i++){ ?>
<div class="row">
<?php while($query_row = mysqli_fetch_assoc($result)){ ?>
<div class="col-md-3">
<a href="book.php?bookisbn=<?php echo $query_row['book_isbn']; ?>">
<img class="img-responsive img-thumbnail" style = "width:200px; height:250px;" src="bootstrap/images/<?php echo trim($query_row['book_image']); ?>">
</a>
</div>
<?php
$count++;
if($count >= 4){
$count = 0;
break;
}
} ?>
</div>
<?php
}
if(mysqli_num_rows($result)==0){ ?>
<div class="row">
<div class="col-md-3" style="color:red">
<?php
echo "No books found for this search criteria.";
?>
</div>
</div>
<?php
}else if(mysqli_num_rows($result)!=0){?>
<style><?php include 'bootstrap/css/pagination.css'; ?></style>
<?php
echo "<p style='margin-top: 30px; margin-left: 500px; '>";
// This shows the user what page they are on, and the total number of pages
echo " --Page $pagenum of $last-- <p>";
echo "<div style='margin-top: 30px; margin-left: 400px; margin-bottom:30px;'>";
$request = "";
if(isset($_GET['searchBox']) && $_GET['searchBox']!=""){
$request .= "searchBox=".$_GET['searchBox'];
}
if(isset($_GET['category']) && $_GET['category']!="All"){
if($request!=""){
$request.="&";
}
$request .= "category=".$_GET['category'];
}
if(isset($_GET['publisher']) && $_GET['publisher']!='All'){
if($request!=""){
$request.="&";
}
$request .= "publisher=".$_GET['publisher'];
}
if($request!=""){
$request.="&";
}
if ($pagenum == 1){
echo " <a href='{$_SERVER['PHP_SELF']}?$request" . "pagenum=1' disabled=''> <<-First</a> ";
echo " ";
$previous = $pagenum-1;
echo " <a href='{$_SERVER['PHP_SELF']}?$request" . "pagenum=$previous' disabled=''> <-Previous</a> ";
}else{
echo " <a href='{$_SERVER['PHP_SELF']}?$request". "pagenum=1'> <<-First</a> ";
echo " ";
$previous = $pagenum-1;
echo " <a href='{$_SERVER['PHP_SELF']}?$request". "pagenum=$previous'> <-Previous</a> ";
}
//just a spacer
echo " ---- ";
//This does the same as above, only checking if we are on the last page, and then generating the Next and Last links
if ($pagenum == $last){
$next = $pagenum+1;
echo " <a href='{$_SERVER['PHP_SELF']}?$request". "pagenum=$next'>Next -></a> ";
echo " ";
echo " <a href='{$_SERVER['PHP_SELF']}?$request". "pagenum=$last'>Last ->></a> ";
}
else {
$next = $pagenum+1;
echo " <a href='{$_SERVER['PHP_SELF']}?$request". "pagenum=$next'>Next -></a> ";
echo " ";
echo " <a href='{$_SERVER['PHP_SELF']}?$request". "pagenum=$last'>Last ->></a> ";
}
echo "</div>";
}
?>