SOAP_Google 类让 PHP 开发者和 Google 的WebService 交互，并利用 Google 巨大的搜索数据库技术。



SOAP_Google.php


<?php
//
// +----------------------------------------------------------------------+
// | PHP Interface to the Google API |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Author: Sebastian Bergmann <sb@sebastian-bergmann.de> |
// +----------------------------------------------------------------------+
//

require_once 'SOAP/Client.php';

/**
* PHP Interface to the Google API
*
* @author Sebastian Bergmann <sb@sebastian-bergmann.de>
* @access public
*/
class SOAP_Google {
/**
* @var string
* @access private
*/
var $_licenseKey = '';

/**
* @var object
* @access private
*/
var $_soapClient = NULL;

/**
* Constructor.
*
* @param string
* @access public
*/
function SOAP_Google($licenseKey) {
$this->_licenseKey = $licenseKey;

$this->_soapClient = new SOAP_Client(
'http://api.google.com/search/beta2'
);
}

/**
* Retrieves a page by URL from the Google Cache.
*
* @param string
* @return mixed
* @access public
*/
function getCachedPage($url) {
$result = $this->_performAPICall(
'doGetCachedPage',

array(
'key' => $this->_licenseKey,
'url' => $url
)
);

if ($result) {
$result = base64_decode($result);
}

return $result;
}

/**
* Retrieves a spelling suggestion for a phrase.
*
* @param string
* @return mixed
* @access public
*/
function getSpellingSuggestion($phrase) {
return $this->_performAPICall(
'doSpellingSuggestion',

array(
'key' => $this->_licenseKey,
'phrase' => $phrase
)
);
}

/**
* Performs a web search.
*
* @param array
* @return mixed
* @access public
*/
function search($parameters = array()) {
if (!isset($parameters['query'])) {
return false;
}

return $this->_performAPICall(
'doGoogleSearch',

array(
'key' => $this->_licenseKey,
'q' => $parameters['query'],
'start' => isset($parameters['start']) ? $parameters['start'] : 0,
'maxResults' => isset($parameters['maxResults']) ? $parameters['maxResults'] : 10,
'filter' => isset($parameters['filter']) ? $parameters['filter'] : false,
'restrict' => isset($parameters['restrict']) ? $parameters['restrict'] : '',
'safeSearch' => isset($parameters['safeSearch']) ? $parameters['safeSearch'] : false,
'lr' => isset($parameters['lr']) ? $parameters['lr'] : '',
'ie' => isset($parameters['ie']) ? $parameters['ie'] : '',
'oe' => isset($parameters['oe']) ? $parameters['oe'] : ''
)
);
}

/**
* @param string
* @param array
* @return mixed
* @access private
*/
function _performAPICall($apiCall, $parameters) {
$result = $this->_soapClient->call(
$apiCall,
$parameters,
'urn:GoogleSearch'
);

if (!PEAR::isError($result)) {
return $result;
} else {
return false;
}
}
}
?>

程序示范：


<?php
require_once 'SOAP_Google.php';

$google = new SOAP_Google('your license key');

$result = $google->search(
array(
'query' => 'sebastian bergmann'
)
);

if (false !== $result) {
print_r($result);
} else {
echo 'Query failed.';
}
?>