You can search for Images with Yahoo using Zend_Service_Yahoo's
imageSearch() method. This method accepts a string query
parameter and an optional array of search options, as for the webSearch()
method. For full details and an option list, please visit the Yahoo! Image
Search Documentation.
Example 910. Finding Images with Yahoo!
<?php
$yahoo = new Zend_Service_Yahoo("YAHOO_APPLICATION_ID");
$results = $yahoo->imageSearch('PHP');
foreach ($results as $result) {
echo $result->Title .'<br />';
}