创建索引

<?php
/**
 * https://www.elastic.co/guide/en/elasticsearch/client/php-api/current/index_management.html
 * https://open.163.com/newview/movie/free?pid=XGG8PCIUJ&mid=HGG8PFDRB
 */
use Elasticsearch\ClientBuilder;

require './vendor/autoload.php';

/**
 * @param $num 生成汉字的数量
 * @return string
 */
function getChar($num)
{
    $b = '';
    for ($i = 0; $i < $num; $i++) {
        // 使用chr()函数拼接双字节汉字，前一个chr()为高位字节，后一个为低位字节
        $a = chr(mt_rand(0xB0, 0xD0)) . chr(mt_rand(0xA1, 0xF0));
        // 转码
        $b .= iconv('GB2312', 'UTF-8', $a);
    }

    return $b;
}

$client = ClientBuilder::create()
    ->setHosts(['127.0.0.1:9200'])
    ->setRetries(2)
    ->build();

$index = [
    'index' => 'shop',
    'body'  => [
        'settings' => [
            'number_of_shards'   => 5,
            'number_of_replicas' => 0,

            'analysis' => [
                'analyzer' => [
                    'text_analyzer' => [
                        'tokenizer' => 'ik_max_word',
                        'filter' => 'py'
                    ],
                    'completion_analyzer' => [
                        'tokenizer' => 'keyword',
                        'filter' => 'py'
                    ]
                ],
                'filter' => [
                    'py' => [
                        "type"=>  "pinyin",
                        "keep_full_pinyin"=>  false,
                        "keep_joined_full_pinyin"=>  true,
                        "keep_original" => true,
                        "limit_first_letter_length" => 16,
                        "none_chinese_pinyin_tokenize"=>  false,
                        "remove_duplicated_term"=>  true
                    ]
                ]
            ]
        ],
        'mappings' => [
            '_source' => [
                'enabled' => true
            ],
            'properties' => [
                'article_id' => [
                    'type' => 'integer' // long
                ],
                'title' => [
                    'type' => 'text',
                    'analyzer' => 'text_analyzer',
                    'search_analyzer' => 'ik_smart',
                ],
                'title_completion' => [
                    'type' => 'completion',
                    'analyzer' => 'completion_analyzer',
                    // 狮子 虱子 search：我掉到了狮子笼里怎么办
                    // 人民 人民日报 search: 日美 -> rm
                    'search_analyzer' => 'ik_smart',
                ],
                'content' => [
                    'type' => 'text',
                    'analyzer' => 'text_analyzer',
                    'search_analyzer' => 'ik_smart',
                ]
            ]
        ]
    ]
];

//$response = $client->indices()->create($index);
//print_r($response);
//exit;

$doc = [
    'index' => 'shop',
    'id' => 2,
    'body' => [
        'article_id' => 2,
        'title' => '人民日报再次点名阿里，不要妄想大而不倒',
        'title_completion' => ['人民日报', '阿里', '点名', '妄想', '不倒'],
        'content' => '据吉林省委政法委官方微信公众号“平安吉林”消息：8月31日，省委召开省委政法委员会干部会议，宣布省委政法委主要领导任职决定。省委副书记高广滨，省委常委、省委政法委书记范锐平出席会议并讲话。省委常委、省委组织部部长张恩惠主持会议并宣布决定。副省长、省公安厅厅长刘金波，省法院院长徐家新，省检察院检察长尹伊君，省武警总队司令员赵洪炜出席会议。'
    ]
];

//$client->index($doc);
//exit;

$docs = [];
for ($i = 11; $i <= 1000; $i++) {
    $docs['body'][] = [
        'index' => [
            '_index' => 'article',
            '_id' => $i,
        ],
    ];

    $docs['body'][] = [
        'article_id' => $i,
        'title' => getChar(20),
        'content' => getChar(200),
        'title_completion' => getChar(100)
    ];
}

//$client->bulk($docs);
//exit;

$params = [
    'index' => 'shop',
    'body' => [
        'query' => [
            'match' => [
                'title' => '阿里'
            ]
        ],
        'stored_fields' => ['title']
    ]
];

/* select * from article where title like '%国际%' or title like '%test%'*/
// $result = $client->search($params);
// var_dump($result);
// exit;

$params = [
    'index' => 'article',
    'body' => [
        'query' => [
            'bool' => [
                'must' => [
                    ["match" => ['title' => 'test']],
                    ["match" => ['title' => 'elasticsearch']]
                ]
            ]
        ]
    ]
];

/* select * from article where title like '%国际%' and title like '%test%'*/
// $result = $client->search($params);
// var_dump($result);

$params = [
    'index' => 'article',
    'body' => [
        'query' => [
            'bool' => [
                'must' => [
                    ["match" => ['title' => '阿里']],
                    ["match" => ['content' => '阿里']]
                ]
            ]
        ],
        '_source' => ['article_id', 'title'],
        'sort' => [['article_id' => 'desc']]
    ]
];

/* select article_id, title from article where title like '%国际%' and content like '%test%' order by article_id desc*/
// $result = $client->search($params);
// var_dump($result);


$params = [
    'index' => 'article',
    'body' => [
        'query' => [
            'bool' => [
                'must' => [
                    ["match" => ['title' => '阿里']],
                    ["match" => ['content' => '阿里']]
                ]
            ]
        ],
        // '_source' => ['article_id', 'title'],
        '_source' => [''],
        // 'sort' => [['article_id' => 'desc']],
        'highlight' => [
            // 'fields' => ['title' => ['type' => 'unified'], 'content' => ['type' => 'unified']],
            'fields' => ['title' => new \stdClass(), 'content' => new \stdClass()],
            'pre_tags' => '<b style="color: red">',
            'post_tags' => '</b>'
        ]
    ]
];

/* select article_id, title from article where title like '%国际%' and content like '%test%' order by article_id desc*/
// $result = $client->search($params);
// var_dump($result);

// 搜索建议，前缀检索
$params = [
    'index' => 'shop',
    'body' => [
        'suggest' => [
            'my-suggest' => [
                'text' => 'w想',
                'completion' => [
                    'field' => 'title_completion',
                    'skip_duplicates' => true,
                    'size' => 5
                ],
            ]
        ],
    ]
];

$result = $client->search($params);
var_dump($result);
echo "<hr/>";
//exit;

$params = [
    'index' => 'shop',
    'body' => [
        'query' => [
            'match' => [
                'title' => 'zaici'
            ]
        ],
//        'stored_fields' => ['title']
    ]
];

/* select * from article where title like '%国际%' or title like '%test%'*/
$result = $client->search($params);
var_dump($result);
//exit;

suggest autocomplete自动完成

<?php
use Elasticsearch\ClientBuilder;

require './vendor/autoload.php';

$keyword = $_GET['keyword'] ?? 'rm';

$client = ClientBuilder::create()
    ->setHosts(['127.0.0.1:9200'])
    ->setRetries(2)
    ->build();

// 搜索建议，前缀检索
$params = [
    'index' => 'shop',
    'body' => [
        'suggest' => [
            'my-suggest' => [
                'text' => $keyword,
                'completion' => [
                    'field' => 'title_completion',
                    'skip_duplicates' => true,
                    'size' => 5,
                ],
            ],
        ],
        '_source' => ['title_completion']
    ]
];

$result = $client->search($params);
//var_dump($result['suggest']['my-suggest']);exit;
//echo json_encode($result['suggest']['my-suggest'], JSON_UNESCAPED_UNICODE);

$words = [];
foreach ($result['suggest']['my-suggest'] as $suggest) {
    foreach ($suggest['options'] as $option) {
        $words = array_merge($words, [$option['text']]);
    }
}

echo json_encode($words, JSON_UNESCAPED_UNICODE);

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
</head>
<body>
<input type="text" id="keyword" name="keywords" />
</body>
</html>
<!--<script type="text/javascript" src="http://localhost/public/js/jquery.min.js"></script>-->
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>

<script type="text/javascript">
    $(function(){
        var $searchBox = $('#keyword');
        $searchBox.autocomplete({
            minLength: 2, // 最小字符数，默认1
            delay: 300, // 延迟加载300ms
            source: function (request, response) { // 数据源
                console.log(request.term);
                $.ajax({
                    url: 'http://localhost/elasticsearch-php/auto_complete.php?keyword=' + request.term,
                    success: function (res) {
                        res = JSON.parse(res);
                        response(res);
                    }
                });
            },
            select: function (event, ui) { // 选中事件
                $('#keyword').text(ui.item.value);
                // window.location.href = locate_url(start, size);
            }
        });
    });
</script>