fetching data from php Admin for display - php

Question

I have a total 4 book of abc. I showing that author 1 book in book detail page. As well as i want to display remaining 3 books of author in below other books by this writer section. But in this section showing 1 book of that author. Please help me what can i do?
Book detail code:
<?php
if(isset($_GET['pid']) && !empty($_GET['pid'])){
$id = $_GET['pid'];
$result = $conn->query("SELECT * FROM bookrecord WHERE id ='$id' and status='a'");
if($result->num_rows > 0){
$imgData = $result->fetch_assoc();
extract($imgData);
?>
<div class="preview-pic tab-content">
<div class="tab-pane active" id="pic-1">
<img src="admin_pannel/book_images/<?php echo $imgData['file']; ?>" class="img-responsive" alt=""/>
</div>
</div>
<?php
}
}
?>
OTHER BOOKS BY THIS WRITER code:
<?php
if(isset($_GET['auth_name']) && !empty($_GET['auth_name'])){
$auth_name = $_GET['auth_name'];
$result = $conn->query("SELECT * FROM bookrecord WHERE author_name ='$auth_name' and status='a'");
if($result->num_rows > 0){
$row = $result->fetch_assoc();
extract($row);
?>
<div class="col-md-2">
<img src="admin_pannel/book_images/<?php echo $row['file']; ?>" class="img-responsive center-block">
<h4 class="text-center"><?php echo $row['book_title']; ?></h4>
<h5 class="text-center"><?php echo $row['author_name']; ?></h5>
</div>
<?php
}
}
?>
This is my (book-detail.php) page and i come from this link:
<a class="btnpoem" href="book-detail.php?pid=<?php echo htmlentities($row['id']);?>&auth_name=<?php echo htmlentities($row['author_name']);?>">Download</a>

Answer 1

You need to apply while() in your second code:-
<?php
if(isset($_GET['auth_name']) && !empty($_GET['auth_name'])){
$auth_name = $_GET['auth_name'];
$result = $conn->query("SELECT * FROM bookrecord WHERE author_name ='$auth_name' and status='a'");
if($result->num_rows > 0){
while($row = $result->fetch_assoc()){
extract($row);
?>
<div class="col-md-2">
<img src="admin_pannel/book_images/<?php echo $row['file']; ?>" class="img-responsive center-block">
<h4 class="text-center"><?php echo $row['book_title']; ?></h4>
<h5 class="text-center"><?php echo $row['author_name']; ?></h5>
</div>
<?php
}
}
}
?>
Note:- Your queries are Wide-Open for SQL-INJECTION.
So try to use prepared statements.
Reference:-
PHP: mysqli::prepare - Manual
PHP: PDO::prepare - Manual

Answer 2

Just change your code from this code and in this code you have to change your sql query a lil bit to get rows except first one because you have got first row(Image), and instead of while loop you can also use foreach
<?php
if(isset($_GET['auth_name']) && !empty($_GET['auth_name'])){
$auth_name = $_GET['auth_name'];
$result = $conn->query("SELECT * FROM bookrecord WHERE author_name ='$auth_name' and status='a'" and WHERE ID NOT IN (SELECT MIN(ID) FROM your_table GROUP BY USER_ID));
if($result->num_rows > 0){
foreach ($result as $key){
?>
<div class="col-md-2">
<img src="admin_pannel/book_images/<?php echo $key['file']; ?>" class="img-responsive center-block">
<h4 class="text-center"><?php echo $key['book_title']; ?></h4>
<h5 class="text-center"><?php echo $key['author_name']; ?></h5>
</div>
<?php
}
}
}
?>`