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Search a database of images
Using MySQL Databases in PHP Pages example from a Well House Consultants training course
More on Using MySQL Databases in PHP Pages [link]
Source code: picclim.php Module: H113
<?php
# Search and display images /* This demonstration selects and displaye images from our library of images associated with "The Horse's Mouth", our Wiltshire wiki, and more. */ mysql_connect("localhost","wellho","xxxxxxx"); mysql_select_db("wellho"); $perpage = 20; $html = ""; $startat = $_REQUEST[page] * $perpage; $limlim = "%".$_REQUEST[look4]."%"; $q = mysql_query("select count(iid) from im_library where descriptor like '$limlim'"); $row = mysql_fetch_array($q); $havesome = $row[0]; $pages = floor(($row[0]-1) / $perpage) +1 ; $q = mysql_query("select * from im_library where descriptor like '$limlim' order by iid desc limit $startat,$perpage"); while ($row = mysql_fetch_assoc($q)) { $text = strip_tags($row[entry_text]); $text = substr($text,0,300); # Note - we're using mod_rewrite to pretend that images # are really plain files. You may want to vary this $html .= "$row[iid] - <a href=/pix/$row[filename] target=pix>$row[descriptor]</a></br>"; }; $lynx = "Please choose the next page you want to view:"; for ($k=0; $k<$pages; $k++) { if ($k != $_REQUEST[page]) { $lynx .= " <a href=$PHP_SELF"."?page=$k&look4=". urlencode(stripslashes($_REQUEST[look4])).">".($k+1)."</a>"; } else { $lynx .= " <b>--".($k+1)."--</b>"; } } if ($pages < 2) { $lynx = "All results shown on this page"; } if ($havesome == 0) { $lynx = "Sorry - no pictures matched. Please change your search string"; } if ($_REQUEST[look4]) { $ttl = htmlspecialchars(stripslashes($_REQUEST[look4]))." - an index of pictures"; $for = "Your search was for <b>".htmlspecialchars (stripslashes($_REQUEST[look4]))."</b>"; } else { $ttl = "An index of pictures"; $for = "You have not limited your search - all pictures selected"; } ?> <html><head> <title><?= $ttl ?></title> <body><?= $for ?><br> <h2>Here are the entries you selected - page <?= $_REQUEST[page]+1 ?>:</h2><br> <?= $html ?> <?= $lynx ?> <h2>Searching Pictures on the Well House Consultants web site</h2> We've got over a thousand pictures on this web site - everyting from pictures of training courses to many, many places in Wiltshire and further afield ... and many of them are titled in our database. This page demonstrates how our picture database can be searched.<br><br> <form>Search only for pictures with titles including ... <input name=look4 value="<?= htmlspecialchars(stripslashes($_REQUEST[look4])) ?>"> (Please leave box empty to select all titles) <input type=submit></form><br><br> This page is from the web site of <a href=http://www.wellho.net>Well House Consultants</a> who provide Open Source computer training. Program written / developed as a demonstration during a <a href=http://www.wellho.net/course/phfull.html>PHP course</a>. </body></html> <?php /* Footnote / comment. This example does not include the code to upload images, add them to the database, or create the database tables. Other examples are available elsewhere on our site to cover this. The Summer, 2006 issue of "Of Course" is a good place to start - download it from http://www.wellho.net/net/ofcourse.html Table creation command: create table im_library ( iid int primary key not null auto_increment, filename text, imgdata longblob, descriptor text) */ Learn about this subject
This module and example are covered on the following public courses:
* Learning to program in PHP * PHP Programming * MySQL * PHP Programming * Learning to program in PHP Also available on on site courses for larger groups Books covering this topic
Yes. We have over 700 books in our library. Books
covering PHP are listed here and when you've selected a
relevant book we'll link you on to Amazon to order.
Other Examples
This example comes from our "Using MySQL Databases in PHP Pages" training module. You'll find a description of the topic and some
other closely related examples on the "Using MySQL Databases in PHP Pages" module index page.
Full description of the source code
You can learn more about this example on the training courses listed on this page,
on which you'll be given a full set of training notes.
Many other training modules are available for download (for limited use) from our download centre under an Open Training Notes License. Other resources
• Our Solutions centre provides a number of longer technical articles.
• Our Opentalk forum archive provides a question and answer centre. • The Horse's mouth provides a daily tip or thought. • Further resources are available via the resources centre. • All of these resources can be searched through through our search engine • And there's a global index here. Web site author
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This program is copyright Well House Consultants Ltd. You are forbidden from using it for running your own training courses without our prior written permission. See our page on courseware provision for more details. Any of our images within this code may NOT be reused on a public URL without our prior permission. For Bona Fide personal use, we will often grant you permission provided that you provide a link back. Commercial use on a website will incur a license fee for each image used - details on request. | |||
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