如何利用PHP和Xunsearch进行敏感词过滤和搜索结果过滤

require_once 'sdk/php/lib/XS.php';

$xs = new XS('sensitive'); // 设置索引名称
$index = $xs->index;
$doc = new XSDocument();
$doc->setFields(array(
    'word',
    'instances',
    'create_time'
));

// 从敏感词列表中逐个添加到索引中
$sensitiveWords = ['敏感词1', '敏感词2', '敏感词3'];
foreach ($sensitiveWords as $word) {
    $doc->setField('word', $word);
    $doc->setField('instances', 0);
    $doc->setField('create_time', time());
    $index->add($doc);
}

require_once 'sdk/php/lib/XS.php';

$xs = new XS('sensitive'); // 设置索引名称
$index = $xs->index;
$search = $xs->search;

$query = '我是一个敏感词';
$result = $search->setQuery($query)->search();

if ($result->count() > 0) {
    // 敏感词匹配成功，进行处理
    foreach ($result as $doc) {
        // 替换敏感词为*
        $word = $doc->word;
        $replace = str_repeat('*', mb_strlen($word));
        $query = str_replace($word, $replace, $query);
    }
}

echo $query; // 输出我是一个***

require_once 'sdk/php/lib/XS.php';

$xs = new XS('search'); // 设置索引名称
$index = $xs->index;
$doc = new XSDocument();
$doc->setFields(array(
    'url',
    'title',
    'content',
    'quality'
));

// 模拟搜索结果添加到索引中
$searchResults = [
    ['url' => 'url1', 'title' => '标题1', 'content' => '内容1', 'quality' => 1],
    ['url' => 'url2', 'title' => '标题2', 'content' => '内容2', 'quality' => 0],
    ['url' => 'url3', 'title' => '标题3', 'content' => '内容3', 'quality' => 1],
];
foreach ($searchResults as $result) {
    $doc->setFields($result);
    $doc->addExData('quality', $result['quality']); // 添加额外数据
    $index->add($doc);
}

require_once 'sdk/php/lib/XS.php';

$xs = new XS('search'); // 设置索引名称
$search = $xs->search;

$query = '关键词';
$result = $search->setQuery($query)->search();

if ($result->count() > 0) {
    foreach ($result as $doc) {
        $quality = $doc->getExData('quality');
        if ($quality == 0) {
            // 不符合要求的搜索结果，进行处理
            $result->remove($doc);
        }
    }
}

// 输出过滤后的搜索结果
foreach ($result as $doc) {
    echo $doc->url . "<br>";
    echo $doc->title . "<br>";
    echo $doc->content . "<br>";
    // ...
}