Here You can make Search Engine By PHP Programming given by MasterinBlogging.
Google has made only three methods available in their Web API. You will see soon that it’s just more than enough to build powerful applications.
Here is what they look like:
doGoogleSearch() – search for specified term in the Google database.
doGetCachedPage() – retrieve a page cache from the Google cache.
doSpellingSuggestion() – retrieve a spelling suggestion from Google.
The above methods exposed by the Google’s Web Services make it possible to use number of very cool features – Web search, cached document retrieval, phrase correction – in a simple but extensible manner, which opens up very interesting new possibilities for Web developers. Pic. 1 shows how a client program invokes a method from Google’s Web Services. Let’s rock and roll.
Pic. 1: Exchanging SOAP packets between the client and Google Web Services
The skeleton of our client code (pseudo codes) will look something like following (Pic. 2):
<?php
if (!$_POST[‘query’])
{
//display form
}
else
{
//execute query on Google
}
Pic. 2: Code Skeleton
As you can see, the script is split into two sections, one for the search form and the other for the search result. An "if" statement is used to decide which section of the script to execute.
Google has made only three methods available in their Web API. You will see soon that it’s just more than enough to build powerful applications.
Here is what they look like:
doGoogleSearch() – search for specified term in the Google database.
doGetCachedPage() – retrieve a page cache from the Google cache.
doSpellingSuggestion() – retrieve a spelling suggestion from Google.
The above methods exposed by the Google’s Web Services make it possible to use number of very cool features – Web search, cached document retrieval, phrase correction – in a simple but extensible manner, which opens up very interesting new possibilities for Web developers. Pic. 1 shows how a client program invokes a method from Google’s Web Services. Let’s rock and roll.
Pic. 1: Exchanging SOAP packets between the client and Google Web Services
The skeleton of our client code (pseudo codes) will look something like following (Pic. 2):
<?php
if (!$_POST[‘query’])
{
//display form
}
else
{
//execute query on Google
}
Pic. 2: Code Skeleton
As you can see, the script is split into two sections, one for the search form and the other for the search result. An "if" statement is used to decide which section of the script to execute.
<html>
<head><basefont face="Verdana" size="2"></head>
<body>
<?php
if (!$_POST['queryStr'])
{
?>
<h2>MyGoogle Search Engine</h2>
<form action="<?=$_SERVER['PHP_SELF']?>" method="post">
Type search term: <input type="text" name="queryStr">
</form>
<?
}
else
{
// include the class from NuSOAP
include("nusoap.php");
// create a instance of the SOAP client object
$soapclient = new soapclient("http://api.google.com/search/beta2");
// uncomment the next line to see debug messages
// $soapclient->debug_flag = 1;
// prepare an array of input parameters to be passed to the remote procedure
// doGoogleSearch()
$params = array(
'Googlekey' => 'gs8f1fJQFHJfBmgmratlW5z3nTQV0ts8', // Google license
// key
'queryStr' => $_POST['queryStr'], // search term that was being typed
'startFrom' => 0, // start from result n
'maxResults' => 10, // show a total of 10 results
'filter' => true, // remove similar results
'restrict' => '', // restrict by topic
'adultContent' => true, // remove adult links from search result
'language' => '', // restrict by language
'iencoding' => '', // input encoding
'oencoding' => '' // output encoding
);
/* invoke the method on the Googles server. The call() method accept four arguments- name of the remote procedure to be invoked, an array of arguments for the remote procedure, namespace and SOAP action */
$MyResult = $soapclient->call("doGoogleSearch", $params, "urn:GoogleSearch", "urn:GoogleSearch");
/* Uncomment next line, if you want to see the SOAP envelop, which is forwarded to Google server, It is important to understand the content of SOAP envelop*/
// echo '<xmp>'.$soapclient->request.'</xmp>';
/* Uncomment next line, if you want to see the SOAP envelop, which is received from Google server. It is important to understand the SOAP packet forwarded from Google Server */
// echo '<xmp>'.$soapclient->response.'</xmp>';
// Print the results of the search
if ($MyResult['faultstring'])
{
?>
<h2>Error Report</h2>
<? echo $MyResult['faultstring'];?>
<?
}
else
{
?>
<h2>MyGoogle Search Results</h2>
Your search for <b><?=$MyResult['searchQuery']?></b> produced <?=$MyResult['estimatedTotalResultsCount']?> hits.
<br>
<? $i=1;
if (is_array($MyResult['resultElements']))
{ echo "<table border=0 cellspacing=2 cellpadding=2>";
foreach ($MyResult['resultElements'] as $r)
{
echo "<tr><td>[$i] <a href=" . $r['URL'] . ">" . $r['title'] . "</a>";
echo $r['snippet'] . "(" . $r['cachedSize'] . ")</td></tr>";
$i++;
}
}
$i=1;
?>
</table>
<?
}
}
?>
</body>
</html>
<head><basefont face="Verdana" size="2"></head>
<body>
<?php
if (!$_POST['queryStr'])
{
?>
<h2>MyGoogle Search Engine</h2>
<form action="<?=$_SERVER['PHP_SELF']?>" method="post">
Type search term: <input type="text" name="queryStr">
</form>
<?
}
else
{
// include the class from NuSOAP
include("nusoap.php");
// create a instance of the SOAP client object
$soapclient = new soapclient("http://api.google.com/search/beta2");
// uncomment the next line to see debug messages
// $soapclient->debug_flag = 1;
// prepare an array of input parameters to be passed to the remote procedure
// doGoogleSearch()
$params = array(
'Googlekey' => 'gs8f1fJQFHJfBmgmratlW5z3nTQV0ts8', // Google license
// key
'queryStr' => $_POST['queryStr'], // search term that was being typed
'startFrom' => 0, // start from result n
'maxResults' => 10, // show a total of 10 results
'filter' => true, // remove similar results
'restrict' => '', // restrict by topic
'adultContent' => true, // remove adult links from search result
'language' => '', // restrict by language
'iencoding' => '', // input encoding
'oencoding' => '' // output encoding
);
/* invoke the method on the Googles server. The call() method accept four arguments- name of the remote procedure to be invoked, an array of arguments for the remote procedure, namespace and SOAP action */
$MyResult = $soapclient->call("doGoogleSearch", $params, "urn:GoogleSearch", "urn:GoogleSearch");
/* Uncomment next line, if you want to see the SOAP envelop, which is forwarded to Google server, It is important to understand the content of SOAP envelop*/
// echo '<xmp>'.$soapclient->request.'</xmp>';
/* Uncomment next line, if you want to see the SOAP envelop, which is received from Google server. It is important to understand the SOAP packet forwarded from Google Server */
// echo '<xmp>'.$soapclient->response.'</xmp>';
// Print the results of the search
if ($MyResult['faultstring'])
{
?>
<h2>Error Report</h2>
<? echo $MyResult['faultstring'];?>
<?
}
else
{
?>
<h2>MyGoogle Search Results</h2>
Your search for <b><?=$MyResult['searchQuery']?></b> produced <?=$MyResult['estimatedTotalResultsCount']?> hits.
<br>
<? $i=1;
if (is_array($MyResult['resultElements']))
{ echo "<table border=0 cellspacing=2 cellpadding=2>";
foreach ($MyResult['resultElements'] as $r)
{
echo "<tr><td>[$i] <a href=" . $r['URL'] . ">" . $r['title'] . "</a>";
echo $r['snippet'] . "(" . $r['cachedSize'] . ")</td></tr>";
$i++;
}
}
$i=1;
?>
</table>
<?
}
}
?>
</body>
</html>
we have seen how developers write software programs that connect remotely to the Google’s Web Services. Communication is performed via the Simple Object Access Protocol (SOAP), an XML-based mechanism for exchanging typed information.
