清单 9. Body Parts 的示例 sphinx.conf
source catalog
{
type = mysql
sql_host = localhost
sql_user = reaper
sql_pass = s3cr3t
sql_db = body_parts
sql_sock = /var/run/mysqld/mysqld.sock
sql_port = 3306
# indexer query
# document_id MUST be the very first field
# document_id MUST be positive (non-zero, non-negative)
# document_id MUST fit into 32 bits
# document_id MUST be unique
sql_query = \
SELECT \
id, partno, description, \
assembly, model \
FROM \
Catalog;
sql_group_column = assembly
sql_group_column = model
# document info query
# ONLY used by search utility to display document information
# MUST be able to fetch document info by its id, therefore
# MUST contain '$id' macro
#
sql_query_info = SELECT * FROM Inventory WHERE id=$id
}
index catalog
{
source = catalog
path = /var/data/sphinx/catalog
morphology = stem_en
min_word_len = 3
min_prefix_len = 0
min_infix_len = 3
}
searchd
{
port = 3312
log = /var/log/searchd/searchd.log
query_log = /var/log/searchd/query.log
pid_file = /var/log/searchd/searchd.pid
}
底部的 searchd 部分将配置 searchd 守护程序本身。该部分中的条目不言自明。query.log 尤为有用：它将在运行时显示每次搜索并显示结果，例如搜索的文档数和匹配总数。
构建和测试索引
您现在已经准备好为 Body Parts 应用程序构建索引。为此，需要执行以下步骤：
键入 $ sudo mkdir -p /var/data/sphinx 创建目录结构 /var/data/sphinx
假定 MySQL 正在运行，使用如下所示的代码运行索引器来创建索引。
清单 10. 创建索引
$ sudo /usr/local/bin/indexer --config /usr/local/etc/sphinx.conf --all
Sphinx 0.9.7
Copyright (c) 2001-2007, Andrew Aksyonoff
using config file '/usr/local/etc/sphinx.conf'...
indexing index 'catalog'...
collected 8 docs, 0.0 MB
sorted 0.0 Mhits, 82.8% done
total 8 docs, 149 bytes
total 0.010 sec, 14900.00 bytes/sec, 800.00 docs/sec
注： -all 参数将重构 sphinx.conf 中列出的所有索引。如果不需要重构所有索引，您可以使用其他参数只对部分索引进行重构。
您现在可以使用如下所示的代码用 search 实用程序测试索引（不必运行 searchd 即可使用 search）。
清单 11. 用 search 测试索引
$ /usr/local/bin/search --config /usr/local/etc/sphinx.conf ENG
Sphinx 0.9.7
Copyright (c) 2001-2007, Andrew Aksyonoff
index 'catalog': query 'ENG ': returned 2 matches of 2 total in 0.000 sec
displaying matches:
1. document=8, weight=1, assembly=5, model=7
id=8
partno=ENG088
description=Cylinder head
price=55
2. document=9, weight=1, assembly=5, model=3
id=9
partno=ENG976
description=Large cylinder head
price=65
words:
1. 'eng': 2 documents, 2 hits
$ /usr/local/bin/search --config /usr/local/etc/sphinx.conf wind
Sphinx 0.9.7
Copyright (c) 2001-2007, Andrew Aksyonoff
index 'catalog': query 'wind ': returned 2 matches of 2 total in 0.000 sec
displaying matches:
1. document=1, weight=1, assembly=3, model=1
id=1
partno=WIN408
description=Portal window
price=423
2. document=5, weight=1, assembly=3, model=1
id=5
partno=WIN958
description=Windshield, front
price=500
words:
1. 'wind': 2 documents, 2 hits
$ /usr/local/bin/search \
--config /usr/local/etc/sphinx.conf --filter model 3 ENG
Sphinx 0.9.7
Copyright (c) 2001-2007, Andrew Aksyonoff
index 'catalog': query 'ENG ': returned 1 matches of 1 total in 0.000 sec
displaying matches:
1. document=9, weight=1, assembly=5, model=3
id=9
partno=ENG976
description=Large cylinder head
price=65
words:
1. 'eng': 2 documents, 2 hits
第一条命令 /usr/local/bin/search --config /usr/local/etc/sphinx.conf ENG 在零件号中找到了两个含有 ENG 的结果。第二条命令 /usr/local/bin/search --config /usr/local/etc/sphinx.conf wind 在两个零件描述中找到了子字符串 wind。而第三条命令把结果限定为 model 为 3 的条目。
编写代码
最后，您可以编写 PHP 代码来调用 Sphinx 搜索引擎。Sphinx PHP API 非常小并且易于掌握。清单 12 是一个小型 PHP 应用程序，用于调用 searchd 以得到使用上面所示的最后一条命令得到的相同结果（"在属于型号 3 的名称中找到含有 ‘cylinder' 的所有零件"）。
清单 12. 从 PHP 调用 Sphinx 搜索引擎
>?php
include('sphinx-0.9.7/api/sphinxapi.php');
$cl = new SphinxClient();
$cl- $cl- $cl-
$result = $cl-
if ( $result === false ) {
echo "Query failed: " . $cl- }
else {
if ( $cl- echo "WARNING: " . $cl- }
if ( ! empty($result["matches"]) ) {
foreach ( $result["matches"] as $doc =< $docinfo ) {
echo "$doc\n";
}
print_r( $result );