search with multiple category and criteria - php

Question

My table has 4 columns. "isbn, author, title, price".
I want to search one of them combining all 4 fields.
Like: if author "kayle" write 4 books with same price ($50) but with different title, for that in search page, if i select author:kayle and hit search, then it shows all books with all different or may be same prices and titles. Now i want to select author:kayle and price:$50 at the same time, and hit enter. For that it will show only $50 prices books wrote by kayle and it will appear in the table with 4 rows.
I try to combine it but stuck with the second step searching query. Here is my code if any one understand what i want to do, please share it. Here is my code:
<form method="post" action="search_form.php">
<input type="hidden" name="submitted" value="true"/>
<table border="1">
<tr>
<td style="padding:3px 10px; font-weight:bold;">ISBN</td>
<td style="padding:3px;">
<input type="hidden" name="category_isbn" id="category_isbn" value="isbn"/>
: <select name='criteria_isbn' id="criteria_isbn" onchange="ajaxFunction()">
<option selected="selected">- Select -</option>
<?php
$order = "SELECT isbn FROM books" or die (mysql_error());
$result = mysql_query($order);
while($data = mysql_fetch_array($result))
{
echo ("<option> $data[isbn] </option>");
}
?>
</select>
</td>
<td style="padding:3px 10px; font-weight:bold;">Author</td>
<td style="padding:3px;">
<input type="hidden" name="category_author" id="category_author" value="author"/>
: <select name='criteria_author' id="criteria_author" onchange="ajaxFunction()">
<option selected="selected">- Select -</option>
<?php
$order = "SELECT author FROM books" or die (mysql_error());
$result = mysql_query($order);
while($data = mysql_fetch_array($result))
{
echo ("<option> $data[author] </option>");
}
?>
</select>
</td>
<td style="padding:3px 10px; font-weight:bold;">Title</td>
<td style="padding:3px;">
<input type="hidden" name="category_title" id="category_title" value="title"/>
: <select name='criteria_title' id="criteria_title" onchange="ajaxFunction()">
<option selected="selected">- Select -</option>
<?php
$order = "SELECT title FROM books" or die (mysql_error());
$result = mysql_query($order);
while($data = mysql_fetch_array($result))
{
echo ("<option> $data[title] </option>");
}
?>
</select>
</td>
<td><input type="submit" /></td>
</tr>
</table>
</form>
<?php
if(isset($_POST['submitted']))
{
$category_isbn = $_POST['category_isbn'];
$criteria_isbn = $_POST['criteria_isbn'];
$query = "SELECT * FROM books WHERE $category_isbn LIKE '%".$criteria_isbn."%'";
$result = mysql_query($query) or die(mysql_error());
$num_rows = mysql_num_rows($result);
if(isset($_POST['criteria_isbn']))
{
$category_author = $_POST['category_author'];
$criteria_author = $_POST['criteria_author'];
$query = "SELECT * FROM books WHERE $category_author LIKE '%".$criteria_author."%'";
$result = mysql_query($query) or die(mysql_error());
$num_rows = mysql_num_rows($result);
if(isset($_POST['criteria_author']))
{
$category_title = $_POST['category_title'];
$criteria_title = $_POST['criteria_title'];
$query = "SELECT * FROM books WHERE $category_title LIKE '%".$criteria_title."%'";
$result = mysql_query($query) or die(mysql_error());
$num_rows = mysql_num_rows($result);
echo "$num_rows results found";
echo "<table border= 1>";
echo "<tr> <th>ISBN</th> <th>AUTHOR</th> <th>TITLE</th> <th>PRICE</th> </tr>";
while($row = mysql_fetch_array($result))
{
echo "<tr><td>";
echo $row['isbn'];
echo "</td><td>";
echo $row['author'];
echo "</td><td>";
echo $row['title'];
echo "</td><td>";
echo $row['price'];
echo "</td></tr>";
}
echo "</table>";
}
}
}
?>
Thanks in advance.

Answer 1

try this
for first search
select* from table where author="kayle";
for second search
select * from table where author="kayle" and price="50";