Как настроить полнотекстовый поиск в Sphinx?

Создать для него конфиг, который будет работать с БД, указать в конфиге что sphinxsearch должен индексировать.

#
# Minimal Sphinx configuration sample (clean, simple, functional)
#

source contacts
{
	type			= mysql

	sql_host		= localhost
	sql_user		= user
	sql_pass		= password
	sql_db			= sales_db
	sql_port		= 3306
	
	sql_query_pre		= SET NAMES utf8

	sql_query		= SELECT * FROM contacts 

    sql_attr_uint    = id
    sql_attr_string    = name

}


index contacts
{
	source			= contacts
	path			= /var/lib/sphinxsearch/data/contacts
	morphology      = stem_ru
	min_word_len    = 1
}


searchd
{
	listen			= 9312
	log			= /var/lib/sphinxsearch/log.log
	query_log		= /var/lib/sphinxsearch/query.log
	read_timeout		= 5
	max_children		= 30
	pid_file		= /var/run/sphinxsearch/searchd.pid
	seamless_rotate		= 1
	preopen_indexes		= 1
	unlink_old		= 1
	workers			= threads # for RT to work
	binlog_path		= /var/lib/sphinxsearch/data
}

source contacts
{
	type			= mysql
	sql_host		= localhost
	sql_user		= export_user
	sql_pass		= Y1q0P2s8
	sql_db			= sales_db
	sql_port		= 3306
	sql_query_pre		= SET NAMES utf8
    sql_query_pre = SET CHARACTER SET utf8
	sql_query = SELECT * FROM contacts WHERE CHAR_LENGTH(name)>4
    sql_attr_string = name

}


index contacts
{
	source			= contacts
	path			= /var/lib/sphinxsearch/data/contacts
	docinfo = extern
    mlock = 0
	morphology      = soundex, metaphone
	charset_table = 0..9, A..Z->a..z, _, a..z, U+410..U+42F->U+430..U+44F, U+430..U+44F
}

searchd
{
	listen			= 9312
	log			= /var/lib/sphinxsearch/log.log
	query_log		= /var/lib/sphinxsearch/query.log
	read_timeout		= 5
	max_children		= 30
	pid_file		= /var/run/sphinxsearch/searchd.pid
	seamless_rotate		= 1
	preopen_indexes		= 1
	unlink_old		= 1
	workers			= threads # for RT to work
	binlog_path		= /var/lib/sphinxsearch/data
}

require_once "sphinxapi.php";
$name = "Виктор Рядых";
$sphinx = new SphinxClient();
$sphinx->SetServer('localhost', 9312);
$sphinx->SetMatchMode(SPH_MATCH_ANY);
$sphinx->SetSortMode(SPH_SORT_RELEVANCE);
$result = $sphinx->query($name, "*");
if($result === false){
    var_dump($sphinx->GetLastError());
}else{
    var_dump($result);
}

{
    "error": "",
    "warning": "",
    "status": 0,
    "fields": [
        "updated_at",
        "created_at",
        "created_by",
        "responsible_user_id",
        "company",
        "tags"
    ],
    "attrs": {
        "name": 7
    },
    "total": "0",
    "total_found": "0",
    "time": "0.000",
    "words": {
        "виктор": {
            "docs": "0",
            "hits": "0"
        },
        "рядых": {
            "docs": "0",
            "hits": "0"
        }
    }
}

Файл contacts есть