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SolrQuery::__construct is a constructor method in PHP that is used to initialize a new SolrQuery object. This constructor method is used to create a new instance of the SolrQuery class and set initial properties or parameters for executing a search query on a Solr server.

Here is an example of how you can use SolrQuery::__construct:

php
$query = new SolrQuery();
$query->setQuery('search term');
$query->setStart(0);
$query->setRows(10);


In the above example, we create a new SolrQuery object using the __construct method, and then we set the search term, start position, and the number of rows to return in the search results.

Note that this example assumes that you have already installed the Solr PHP extension and correctly configured the Solr server connection.