Client.php 1

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\Elastica\Client::_log() 688 Overwriting Client->_log is deprecated. Handle logging functionality by using a custom LoggerInterface.

Index.php 1

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\Elastica\Index::optimize() 200 Replaced by forcemerge

Query/Bool.php 1

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\Elastica\Query\Bool 16 Use BoolQuery instead. From PHP7 bool is reserved word and this class will be removed in further Elastica releases