Accessing the Google Web API via PHP

Update 13th April 21:00pm - The PEAR SOAP package bug which caused some search terms to fail has now been fixed in PEAR CVS by Shane Caraveo.

Update 13th April 10:00am - Sebastian Bergmann has written a class based PHP Google web API interface: SOAP_Google.

<?php
/* Accessing the Google Web API via PHP
   - by Simon Willison (simon@incutio.com)
   This code is in the public domain - do whatever you want with it

   To use this code you will need both PEAR and the PEAR SOAP package
   installed somewhere on your php include path. You can get the SOAP
   package from CVS:

   cvs -d :pserver:cvsread@cvs.php.net:/repository login
   (enter phpfi as the password)
   cvs -d :pserver:cvsread@cvs.php.net:/repository co pear/SOAP

   You will need a Google license key - see this site:
      http://www.google.com/apis/

*/

include("SOAP/Client.php");

// Google search query
$query = 'soap';

// Your google license key
$key = 'xxxxxxxxxxxxxxxxxxxxxxxxx';

$s = new SOAP_Client('http://api.google.com/search/beta2');
$result = $s->call('doGoogleSearch', array(
    'key' => $key,
    'q' => $q,
    'start' => 0,
    'maxResults' => 10,
    'filter' => false,
    'restrict' => '',
    'safeSearch' => false,
    'lr' => '',
    'ie' => '',
    'oe' => '',
), 'urn:GoogleSearch');

// Is result a PEAR_Error?
if (get_class($result) == 'pear_error')
{
	$message = $result->message;
	$output = "An error occured: $message<p>";
}
else
{
	// We have proper search results
	$num = $result['estimatedTotalResultsCount'];
	$elements = $result['resultElements'];
	$list = '';
	if ($num > 0) {
		foreach ($elements as $item) {
			$size = $item['cachedSize'];
			$title = $item['title'];
			$url = $item['URL'];
			$snippet = $item['snippet'];
			$desc = "<p><b>$title</b> - <a href=\"$url\">$url</a> ";
			$desc .= "<small>[Size: $size]</small></p>";
			$desc .= "\n<blockquote>$snippet</blockquote>\n\n";
			$list .= $desc;
		}
	}
	$output = "$num results returned:\n\n$list";
}
echo $output;
?>