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1: check apache log, no error -> 2:check php log, no error -> 3: check mysql log.. you will isolate where the error happen and it will be easier to help you

I don't know. Probably there is some problem.

• As your guide,I checked all the logs, they have no errors.
• Using commands in elasticsearch, I can get right results like this
• curl -XGET 'http://localhost:9200/phosphorum/post/_search?q=11
• But in my project,I can't
• code tracing
• E:\wamp64\www\forum\vendor\elasticsearch\elasticsearch\src\Elasticsearch\Transport.php

• <?php
  try {
          if (isset($body) === true) {
              $body = $this->serializer->serialize($body);
          }
          var_dump($connection->performRequest());exit;
          $response = $connection->performRequest(
              $method,
              $uri,
              $params,
              $body
          );
  
          $connection->markAlive();
          $this->retryAttempts = 0;
  
          $data = $this->serializer->deserialize($response['text'], $response['info']);
          return array(
              'status' => $response['status'],
              'data'   => $data,
              'info'   => $response['info'],
          );
      }

• $method = 'GET' $uri = '/phosphorum/post/_search' $params = array()
• $body = "fields":["id","karma"],"query":{"bool":{"must":[{"term":{"title":"11"}},{"term":{"content":"11"}}]}},"from":0,"size":50}
• Why $data is empty?
• Forgive my broken english , thanks in advanced!

1: check apache log, no error -> 2:check php log, no error -> 3: check mysql log.. you will isolate where the error happen and it will be easier to help you

Thank you very much!

I don't know. Probably there is some problem.

Thank you for your serious answer! I check my codes, and in Indexer.php, losing title and content . I insert them into fields array, it's OK! Thank u very much!