March 2002
Intermediate to advanced
592 pages
15h 52m
English
Content preview from Web Database Applications with PHP, and MySQLBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Querying with User Input
To
introduce querying with user input, we begin by explaining a script
that retrieves the wines made in a wine region that is specified by a
user. This script, shown in Example 5-5, is a
companion to the HTML <form> in Example 5-2.
Example 5-5. A script to display all wineries in a region
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <title>Exploring Wines in a Region</title> </head> <body bgcolor="white"> <?php include 'db.inc'; // Show all wines in a region in a <table> function displayWinesList($connection, $query, $regionName) { // Run the query on the DBMS if (!($result = @ mysql_query ($query, $connection))) showerror( ); // Find out how many rows are available $rowsFound = @ mysql_num_rows($result); // If the query has results ... if ($rowsFound > 0) { // ... print out a header echo "Wines of $regionName<br>"; // and start a <table>. echo "\n<table>\n<tr>" . "\n\t<th>Wine ID</th>" . "\n\t<th>Wine Name</th>" . "\n\t<th>Type</th>" . "\n\t<th>Year</th>" . "\n\t<th>Winery</th>" . "\n\t<th>Description</th>\n</tr>"; // Fetch each of the query rows while ($row = @ mysql_fetch_array($result)) { // Print one row of results echo "\n<tr>" . "\n\t<td>" . $row["wine_id"] . "</td>" . "\n\t<td>" . $row["wine_name"] . "</td>" . "\n\t<td>" . $row["type"] . "</td>" . "\n\t<td>" . $row["year"] . "</td>" . "\n\t<td>" . $row["winery_name"] . "</td>" . "\n\t<td>" . $row["description"] . "</td>" . "\n</tr>"; ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.