AlreadyExpiredException is thrown incorrectly when the query includes the error name.

[oogFranz]

Summary of problem or feature request

When 400 error occurred, the client may throw AlreadyExpiredException event if the error is NOT AlreadyExpiredException surely.

Code snippet of problem

This is an example.

$param = [
    'index' => 'test',
    'body' => [
        "query" =>
            [
                'query_string' => [
                    'fields' => ['field1'],
                    'query' => 'AlreadyExpiredException NOT'
                ]
            ]
    ]
];
$result = $client->search($param);

Because the query includes "AlreadyExpiredException", the error is regarded as AlreadyExpiredException. It should be parse_exception.

This code has the problem.
https://github.com/elastic/elasticsearch-php/blob/v6.1.0/src/Elasticsearch/Connections/Connection.php#L602

ScriptLangNotSupportedException also has same issue.

System details

• Operating System
  Linux
• PHP Version
  7.3.4
• ES-PHP client version
  6.1.0
• Elasticsearch version
  7.0.0

[oogFranz]

Further more, the AlreadyExpiredException seems be removed since Elasticsearch 6.0.0.
elastic/elasticsearch#24857

It is better to remove the if statement from elasticsearch-php also.