Question

I am just starting with elasticsearch. I want to query using cURL in php.

This code gives nothing… (see error below if I execute from command line. I am not sure that this error is caused of line breaks in console…)

$url = "curl -s -XGET http://<my_url>:9200/idx_occurrence/Occurrence/_search -d '
{
'filtered' : {
    'query' : {
        'term' : { 'kingdom_interpreted' : 'Plantae' }
    }
}

}' ";

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_HEADER, 0);

$return=curl_exec($ch);

var_dump($return);

but if I use this url http://<my_url>:9200/idx_occurrence/Occurrence/_search?q=kingdom_interpreted:Plantae

then I get results from cURL.

Maybe may query filter is incorrect? (I tried several options without success)

ERROR: {“error”:”SearchPhaseExecutionException[Failed to execute phase [query], total failure; shardFailures {[AS6HqxgNRtyU9-pQKhJsXQ][idx_occurrence][3]: SearchParseException[[idx_occurrence][3]: from[-1],size[-1]: Parse Failure [Failed to parse source [\n{\n filtered : {\n query : {\n term : { kingdom : Plantae }\n }\n}\n}]]]; nested: SearchParseException[[idx_occurrence][3]: from[-1],size[-1]: Parse Failure [No parser for element [filtered]]]; }{[AS6HqxgNRtyU9-pQKhJsXQ][idx_occurrence][2]: SearchParseException[[idx_occurrence][2]: from[-1],size[-1]: Parse Failure [Failed to parse source [\n{\n filtered : {\n query : {\n term : { kingdom : Plantae }\n }\n}\n}]]]; nested: SearchParseException[[idx_occurrence][2]: from[-1],size[-1]: Parse Failure [No parser for element [filtered]]]; }]”,”status”:500}

Answer 1

I have been using the Elastica PHP library for my elasticsearch interactions:

https://github.com/ruflin/Elastica

It had a very short learning curve. Here’s an example:

$client = new Elastica_Client();
$index = $client->getIndex('idx_occurrence');
$index->getType('Occurrence');

$query_string = new Elastica_Query_QueryString('Plantae');
$query_string->setFields(array('kingdom_interpreted'));    
$query = new Elastica_Query($query_string);

$index->refresh();
$searchResults = $index->search($query);

This illustrates a Query String search limited to a specific field. $searchResults is an array of Elastica_ResultSet objects. I like Elastica because it abstracts away any cURL-related issues.