The Code
Save the following code to your web server in a file called yahoo_search.php.
TIP
Don't forget to grab a unique application ID for this script at http://developer.yahoo.net.
<?php
// yahoo_search.php
// Accepts a search term and shows the top results.
// Usage: yahoo_search.php?p=<Query>
//
// You can create an AppID, and read the full documentation
// for Yahoo! Web Services at http://developer.yahoo.net/
// Set your unique Yahoo! Application ID
$appID = "insert your app ID";
// Grab the incoming search query, and encode for a URL
$query = $_GET['p'];
$query = urlencode($query);
if ($query == "") {
print "usage: yahoo_search.php?p=<Query>"; die;
}
// Construct a Yahoo! Search Query with only required options
$language = "en";
$req_url = "http://api.search.yahoo.com/";
$req_url .= "WebSearchService/V1/webSearch?";
$req_url .= "appid=$appID";
$req_url .= "&query=$query";
$req_url .= "&language=$language";
// Make the request
$yahoo_response = file_get_contents($req_url);
// Parse the XML
$xml = simplexml_load_string($yahoo_response);
// Initialize results counter
$i = 0;
?>
<html>
<body>
<h2>Yahoo! Search Results</h2>
<ol>
<?php
// Loop through the items returned, printing them out
foreach ($xml->Result as $result) {
$i++;
$title = $result->Title;
$summary = $result->Summary;
$summary = preg_replace("/</i","<",$summary);
$clickurl = $result->ClickUrl;
$url = $result->Url;
print "<li><div style=\"margin-bottom:15px;\">";
print "<a href=\"$clickurl\">$title</a><br />";
print "$summary<br />";
print "<cite>$url</cite></div></li>\n";
}
?>
</ol>
-- Results Powered by Yahoo!
</body>
</html>
This script uses the value of the querystring variable p to build a Yahoo! Web Search request URL and fetches the XML with the file_get_contents() function. Once the script has the XML in the $yahoo_response string, it calls the SimpleXML function simplexml_load_string( ), which parses the XML and makes the data available to PHP as an object. Finally, the script loops through the objects, using print to send the data to the browser.
