A simple Google search client
<?php
include_once 'SOAP/Client.php';

$key = 'xxxxxxxxxxxxxxxx'

$query = array(
        'key' => $key,
        'q' => 'link:metallo.scripps.edu',
        'start' => 0,
        'maxResults' => 10,
        'filter' => true,
        'restrict' => '',
        'safeSearch' => false,
        'lr' => '',
        'ie' => '',
        'oe' => ''
    );

$wsdl = new SOAP_WSDL('GoogleSearch.wsdl');
$client = $wsdl->getProxy();
$result = $client->doGoogleSearch($query)
print_r($result);
?>
... and the result of running it
stdClass Object
(
    [directoryCategories] => 

    [documentFiltering] => 
    [endIndex] => 10
    [estimateIsExact] => 
    [estimatedTotalResultsCount] => 238
    [resultElements] => Array
        (
            [0] => stdClass Object
                (
                    [URL] => http://metallo.scripps.edu/feedback.html
                    [cachedSize] => 13k
                    [directoryCategory] => stdClass Object
                        (
                            [fullViewableName] => 
                            [specialEncoding] => 
                        )

                    [directoryTitle] => 
                    [hostName] => 
                    [relatedInformationPresent] => 1
                    [snippet] => [MDB - TSRI]. Feedback: Thanks for taking the time to send us your feedback.<br> Make sure that you include your e-mail address and your comments. <b>...</b>  
                    [summary] => 
                    [title] => MDB (Feedback) - Metalloprotein Site Database &amp; Browser
                )

            [1] => stdClass Object
                (
                    [URL] => http://metallo.scripps.edu/PROMISE/CHLMAIN_REV.html
                    [cachedSize] => 36k
                    [directoryCategory] => stdClass Object
                        (
                            [fullViewableName] => 
                            [specialEncoding] => 
                        )

                    [directoryTitle] => 
                    [hostName] => 
                    [relatedInformationPresent] => 1
                    [snippet] => Created: 8 April 1998 Last modified: 19 April 1999. General references<br> on structure and function of chlorophylls and chlorophyll proteins. <b>...</b>  
                    [summary] => 
                    [title] => General references on chlorophyll proteins
                )

            [2] => stdClass Object
                (
                    [URL] => http://metallo.scripps.edu/sql_docs/sql_help.html
                    [cachedSize] => 15k
                    [directoryCategory] => stdClass Object
                        (
                            [fullViewableName] => 
                            [specialEncoding] => 
                        )

                    [directoryTitle] => 
                    [hostName] => 
                    [relatedInformationPresent] => 1
                    [snippet] => [MDB - TSRI]. SQL Help. <b>...</b>  
                    [summary] => 
                    [title] => SQL Help Information-Metalloprotein Site Database and Browser <b>...</b>
                )

            [3] => stdClass Object
                (
                    [URL] => http://www.geocities.com/dslongley/freedbs.html
                    [cachedSize] => 101k
                    [directoryCategory] => stdClass Object
                        (
                            [fullViewableName] => 
                            [specialEncoding] => 
                        )

                    [directoryTitle] => 
                    [hostName] => 
                    [relatedInformationPresent] => 1
                    [snippet] => Free Scientific and Academic Databases and Searchable Data Sets Over<br> 340 resources listed! Last updated 1/31/03. To search for databases <b>...</b>  
                    [summary] => 
                    [title] => Free Scientific and Academic Databases and Searchable Data Sets
                )

            [4] => stdClass Object
                (
                    [URL] => http://www.zend.com/comm_person.php?id=9
                    [cachedSize] => 33k
                    [directoryCategory] => stdClass Object
                        (
                            [fullViewableName] => 
                            [specialEncoding] => 
                        )

                    [directoryTitle] => 
                    [hostName] => 
                    [relatedInformationPresent] => 1
                    [snippet] => Who&#39;s Who - Jesus M. Castagnetto, Nominate Someone. Name, Jesus M.<br> Castagnetto, Category, Book authors. Country, United States. Email,<br> for <b>...</b>  
                    [summary] => 
                    [title] => Zend - The php Company
                )

            [5] => stdClass Object
                (
                    [URL] => http://directory.google.com/Top/Science/Physics/Crystallography/Databases/
                    [cachedSize] => 13k
                    [directoryCategory] => stdClass Object
                        (
                            [fullViewableName] => 
                            [specialEncoding] => 
                        )

                    [directoryTitle] => 
                    [hostName] => 
                    [relatedInformationPresent] => 1
                    [snippet] => Google, Directory Help Search only in Databases Search the Web. Databases, <b>...</b>  
                    [summary] => 
                    [title] => Google Directory - Science &gt; Physics &gt; Crystallography &gt; Databases
                )

            [6] => stdClass Object
                (
                    [URL] => http://www.biolinks.net.ru/Databases/more3.htm
                    [cachedSize] => 35k
                    [directoryCategory] => stdClass Object
                        (
                            [fullViewableName] => 
                            [specialEncoding] => 
                        )

                    [directoryTitle] => 
                    [hostName] => 
                    [relatedInformationPresent] => 1
                    [snippet] => Your Ad Here! Top : Databases : Page 3. Major Sequence Databases,<br> [4]. Protein Databases, [16]. Protein Domains, [5]. RNA Databases,<br> [9]. <b>...</b>  
                    [summary] => 
                    [title] => Different databases
                )

            [7] => stdClass Object
                (
                    [URL] => http://www.imb-jena.de/IMAGE_ABOUT.html
                    [cachedSize] => 39k
                    [directoryCategory] => stdClass Object
                        (
                            [fullViewableName] => 
                            [specialEncoding] => 
                        )

                    [directoryTitle] => 
                    [hostName] => 
                    [relatedInformationPresent] => 1
                    [snippet] => About the IMB Jena Image Library of Biological Macromolecules. Authors, <b>...</b>  
                    [summary] => 
                    [title] => IMB Jena Image Library of Biological Macromolecules
                )

            [8] => stdClass Object
                (
                    [URL] => http://wwwprof.uniandes.edu.co/~aviswana/bioinfo2.html
                    [cachedSize] => 70k
                    [directoryCategory] => stdClass Object
                        (
                            [fullViewableName] => 
                            [specialEncoding] => 
                        )

                    [directoryTitle] => 
                    [hostName] => 
                    [relatedInformationPresent] => 1
                    [snippet] => Bioinformatics Sites. Sequence Analysis GCG Text-based searching Pairwise<br> Alignment Multiple Sequence Alignment Sequence-based searching <b>...</b>  
                    [summary] => 
                    [title] => Bioinformatics Sites
                )

            [9] => stdClass Object
                (
                    [URL] => http://pecl.php.net/user/jmcastagnetto
                    [cachedSize] => 10k
                    [directoryCategory] => stdClass Object
                        (
                            [fullViewableName] => 
                            [specialEncoding] => 
                        )

                    [directoryTitle] => 
                    [hostName] => 
                    [relatedInformationPresent] => 1
                    [snippet] => PECL, Friday, April 30, 2004. <b>...</b>  
                    [summary] => 
                    [title] => PECL :: Jesus M. Castagnetto
                )

        )

    [searchComments] => 
    [searchQuery] => link:metallo.scripps.edu
    [searchTime] => 0.141005
    [searchTips] => 
    [startIndex] => 1
)