php - How can I search with Unicode characters in elasticsearch? -

i have indexed mysql column elasticsearch , column have ar/en/ro languages values. how can search within these indexes unicode string ?

$hosts = ['localhost:9200'];               $client = \elasticsearch\clientbuilder::create()->sethosts($hosts)->build();    $body = '{  "query": { "filtered": {   "query": {     "match_all": {}   },   "filter": {     "bool": {       "must": [         {"query": {"wildcard": {"text": {"value": "*'.$term.'*"}}}},         {"query": {"wildcard": {"group": {"value": "hotels_cities"}}}}       ]     }   } }  }}';    $params['index'] = 'my_custom_index_name'; $params['type']  = 'translator_translations'; $params['body'] = $body;  $results = $client->search($params); 

the out put hits zero.

-there called analyzer there no information how use in php.

i think found answer of how index unicode languages characters in elasticsearch, hope useful one.

• first have set index name

• second set new language settings filter , language analyzer, this:

  $client = clientbuilder::create()       // instantiate new clientbuilder             ->sethosts(['localhost:9200'])      // set hosts             ->build();  $lang = 'el'; // greek in case  $param['index'] = 'test_' . $lang; // index name  // uncomment line if want delete existing index // $response = $client->indices()->delete($param);  $body = '{   "settings": {     "analysis": {       "filter": {         "greek_stop": {           "type":       "stop",           "stopwords":  "_greek_"          },         "greek_lowercase": {           "type":       "lowercase",           "language":   "greek"         },         "greek_keywords": {           "type":       "keyword_marker",           "keywords":   ["παράδειγμα"]          },         "greek_stemmer": {           "type":       "stemmer",           "language":   "greek"         }       },       "analyzer": {         "greek": {           "tokenizer":  "standard",           "filter": [             "greek_lowercase",             "greek_stop",             "greek_keywords",             "greek_stemmer"           ]         }       }     }   } }';  $param['body'] = $body; // store json body parameter in main array  $response = $client->indices()->create($param); 

then start indexing values greek characters