本文的做法是一台服务器使用tomcat，运行solr，另一台服务器使用apache，负责和用户的交互与显示。

solr的php客户端也有好几个，本文选择了一个简单易用的， php-solr-client ，该项目的地址为 http://code.google.com/p/solr-php-client/，下载后解压放到apache的网站根目录。

下面是一个简单的查询例子：

// make sure browsers see this page as utf-8 encoded HTML

header('Content-Type: text/html; charset=utf-8');

$limit = 10;

$query = isset($_REQUEST['q']) ? $_REQUEST['q'] : false;

$results = false;

if ($query)

{

// The Apache Solr Client library should be on the include path

// which is usually most easily accomplished by placing in the

// same directory as this script ( . or current directory is a default

// php include path entry in the php.ini)

require_once('Apache/Solr/Service.php');

// create a new solr service instance - host, port, and webapp

// path (all defaults in this example)

$solr = new Apache_Solr_Service('localhost', 8983, '/solr/');

// if magic quotes is enabled then stripslashes will be needed

if (get_magic_quotes_gpc() == 1)

{

$query = stripslashes($query);

}

// in production code you'll always want to use a try /catch for any

// possible exceptions emitted by searching (i.e. connection

// problems or a query parsing error)

try

{

$results = $solr->search($query, 0, $limit);

}

catch (Exception $e)

{

// in production you'd probably log or email this error to an admin

// and then show a special message to the user but for this example

// we're going to show the full exception

die("

SEARCH EXCEPTION

{$e->__toString()}

");

}

}

?>

PHP Solr Client Example

Search:

// display results

if ($results)

{

$total = (int) $results->response->numFound;

$start = min(1, $total);

$end = min($limit, $total);

?>

// iterate result documents

foreach ($results->response->docs as $doc)

{

?>

// iterate document fields / values

foreach ($doc as $field => $value)

{

?>

<?php echo htmlspecialchars($field, ENT_NOQUOTES, 'utf-8'); ?><?php echo htmlspecialchars($value, ENT_NOQUOTES, 'utf-8'); ?>

}

?>

}

?>

}

?>

进行查询，如输入car ，结果如下

连接solr查询成功，再进行些美工上的优化，就能有像百度一样的查询界面了