php-elasticaHow do I use a PHP hashmap with Elastica?

A hashmap is a data structure used to store and retrieve data quickly. In PHP, a hashmap can be used with Elastica to store and query documents.

To use a hashmap with Elastica, you need to create an instance of the Elastica\Type\Mapping class and then set the mapping type to hashmap. Then, you can use the setProperties method to define the fields and their types.

For example:

$mapping = new Elastica\Type\Mapping();
$mapping->setType('hashmap');
$mapping->setProperties(array(
    'name' => array('type' => 'string'),
    'age' => array('type' => 'integer'),
    'gender' => array('type' => 'keyword')
));

Once the mapping is set, you can use the index method to index the documents.

For example:

$doc1 = new Elastica\Document('1', array(
    'name' => 'John Doe',
    'age' => 30,
    'gender' => 'male'
));
$doc2 = new Elastica\Document('2', array(
    'name' => 'Jane Doe',
    'age' => 25,
    'gender' => 'female'
));
$type->index($doc1);
$type->index($doc2);

You can then use the search method to query the documents.

For example:

$query = new Elastica\Query\Match();
$query->setField('gender', 'female');
$results = $type->search($query);

This will return a list of documents that match the query.

Helpful links

• Elastica Documentation
• PHP Hashmap Documentation

Edit this code on GitHub