[英]Trouble querying ElasticSearch with CURL in PHP
I'm running an Elastic search on an AWS-EC2 instance and trying to query it via curl but it seems as though I am getting no result from my curl_exec(). 我在AWS-EC2实例上运行弹性搜索,并尝试通过curl查询它,但好像我从curl_exec()没有得到任何结果。 When I try to get the results I'm getting the following 当我尝试获得结果时,我得到以下内容
"Notice: Undefined offset: 0 in /var/www/html/DatabasePage.php on line 35" error
function curlElastic(){
$url = 'http://127.0.0.1:9200/resumes/test_resumes/_search/';
$param = "
{
'query' : {
'match' : {'degree type': 'Masters'}
}";
$header = array(
'Content-Type: application/json'
);
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_HTTPHEADER, $header);
curl_setopt($ch,CURLOPT_POSTFIELDS, $param);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$res = curl_exec($ch);
curl_close($ch);
return $res;
}
if (isset($_POST['search'])) {
$data = curlElastic();
$dataArr = json_decode($data, true);
$result = count($dataArr[0]["hits"]);
// gives "Notice: Undefined offset: 0 in /var/www/html/DatabasePage.php on line 35" error
}
when i run 当我跑步
curl -XGET "localhost:9200/resumes/test_resumes/_search" -H 'Content-Type: application/json' -d '{"query":{"match":{"degree type": "Masters"}}}'
from the command line i get results 从命令行我得到结果
{"took":11,"timed_out":false,"_shards":{"total":5,"successful":5,"skipped":0,"failed":0},"hits":{"total":3,"max_score":0.9808292,"hits":[{"_index":"resumes","_type":"test_resumes","_id":"l5lqtWkBxgH_eRZOiK6d","_score":0.9808292,"_source":{"name": "David McDave", "degree type": "Masters", "degree field": "Compuer Security", "resume text": "I would like to work for you, I have many skills to provide! I can work with HTTP and Java"}},{"_index":"resumes","_type":"test_resumes","_id":"lJlotWkBxgH_eRZONK4V","_score":0.6931472,"_source":{"name": "David McDave", "degree type": "Masters", "degree field": "Compuer Security", "resume text": "I would like to work for you, I have many skills to provide! I can work with HTTP and Java"}},{"_index":"resumes","_type":"test_resumes","_id":"kZlhtWkBxgH_eRZOda7Q","_score":0.6931472,"_source":{"name": "David McDave", "degree type": "Masters", "degree field": "Compuer Security", "resume text": "I would like to work for you, I have many skills to provide! I can work with HTTP and Java"}}]}}
function curlElastic(){
$url = 'http://localhost:9200/resumes/test_resumes/_search/';
$param = array(
"query" => array(
"match" => array(
"degree type" => "Masters"
)
)
);
$header = array(
'Content-Type: application/json'
);
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_HTTPHEADER, $header);
curl_setopt($ch,CURLOPT_POSTFIELDS, json_encode($param));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$res = curl_exec($ch);
if ($res === false)
$res = 'curl error: ' . curl_error($ch);
echo 'stripslashes: ' . stripslashes($res);
curl_close($ch);
return $res;
}
if (isset($_POST['search'])) {
$data = curlElastic();
$dataArr = json_decode($data, true);
$result = count($dataArr["hits"]);
}
Recommendation: Better use the official PHP client for ES https://github.com/elastic/elasticsearch-php 建议:更好地使用ES的官方PHP客户端https://github.com/elastic/elasticsearch-php
Do not try to re-invent the wheel... :) 不要尝试重新发明轮子... :)
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