patents_search_php/public/index.php

<?php

// Generate a random number for sorting by random
$random = rand();

// Assemble a query string to send to Solr. This uses the Solr hostname from config.env. Solr's query syntax can be found at many sites including https://lucene.apache.org/solr/guide/6_6/the-standard-query-parser.html
// This query retrieves only the bib identifier field for records which satisfy the search query
$solrurl = 'http://host.docker.internal:8983/solr/epo_data/select?q.op=OR&q=*%3A*&wt=json&sort=random_' . $random . '%20asc';

// Perform Curl request on the Solr API
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $solrurl);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_HEADER, FALSE);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
$response = curl_exec($ch);
curl_close($ch);

// Turn the API response into useful Json
$json = json_decode($response);

// Pick a random key out of the docs array
$random = array_rand($json->response->docs);

?>

Title:

<?php

// Search for the title in the content element and display it
$content = $json->response->docs[$random]->content;
preg_match('/Title.*\n(.*)\n/', $content, $title);
print_r($title[1]);

?>

<br><br>

Abstract:

<?php

// Search for the title in the content element and display it
$content = $json->response->docs[$random]->content;
preg_match('/Abstract.*\n(.*)\n/', $content, $abstract);
print_r($abstract[1]);

?>