Constructor

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- PHP Manual
- SolrCollapseFunction
- Constructor

# SolrCollapseFunction::__construct

(PECL solr >= 2.2.0)

SolrCollapseFunction::__construct — Constructor

### Description

public SolrCollapseFunction::__construct(string `$field` = ?)

Collapse Function constructor

### Parameters

`field`

  The field name to collapse on.

  In order to collapse a result. The field type must be a single valued String, Int or Float.

### Examples

Example #1 SolrCollapseFunction::__construct() example

    <?phpinclude "bootstrap.php";$options = array(    'hostname' => SOLR_SERVER_HOSTNAME,    'login'    => SOLR_SERVER_USERNAME,    'password' => SOLR_SERVER_PASSWORD,    'port'     => SOLR_SERVER_PORT,    'path'     => SOLR_SERVER_PATH);$client = new SolrClient($options);$query = new SolrQuery('*:*');$func = new SolrCollapseFunction('field_name');$func->setMax('sum(cscore(),field(some_other_field))');$func->setSize(100);$func->setNullPolicy(SolrCollapseFunction::NULLPOLICY_EXPAND);$query->collapse($func);$queryResponse = $client->query($query);$response = $queryResponse->getResponse();print_r($response);?>

### See Also

- SolrQuery::collapse() - Collapses the result set to a single document per group