* screen scraping to parse coin type reference numbers and measurements in order to generate Nomisma-compliant RDF
*****/
//set user agent
ini_set('user_agent', 'Nomisma.org/PHP Harvesting');
//array of queries
$queries = array('crro' => 'coin AND "Roman Republic"', 'pella' => '"Alexander III" AND coin');
$project = 'pella';
$api = 'http://data.fitzmuseum.cam.ac.uk/api/?';
$params = array('query' => $queries[$project], 'size' => 100, 'from' => 0);
$records = array();
$coinTypes = array();
parse_response($api, $params);
//var_dump($records);
//after the API pages have been parsed, then process the resulting records array into Nomisma-conformant RDF
generate_csv($records, $project);
generate_rdf($records, $project);
function parse_response($api, $params)
{
global $records;
$page = $params['from'] / $params['size'] + 1;
echo "Page {$page}\n";
//compare the individual request parameters into k=>v pairs to the URL
$qparams = array();
foreach ($params as $k => $v) {
$qparams[] = "{$k}=" . urlencode($v);
}
$service = $api . implode('&', $qparams);
//request JSON from API
$json = file_get_contents($service);
$data = json_decode($json);
//iterate through results
<?php
$page = 1;
$apiKey = 'a864ed30-fccd-11e5-aaaa-2d4ec69062d0';
$records = array();
//parse each page of the API call
parse_page($page, $apiKey);
//following the parsing of each page, construct CSV;
//generate exports
generate_csv($records);
generate_rdf($records);
/********* FUNCTIONS **********/
function parse_page($page, $apiKey)
{
global $records;
echo "Page {$page}\n";
$query = '(standardreferencenumber:RRC+OR+standardreferencenumber:RIC+OR+standardreferencenumber:Price)';
//$query = '"RIC+IX,+p.+235,+88b(1)"';
$service = 'http://api.harvardartmuseums.org/object?size=100&classification=Coins&q=' . $query . '+AND+department:"Department%20of%20Ancient%20and%20Byzantine%20Art%20%26%20Numismatics"&apikey=' . $apiKey . '&page=' . $page;
$json = file_get_contents($service);
$data = json_decode($json);
foreach ($data->records as $record) {
$references = explode(';', $record->standardreferencenumber);
foreach ($references as $reference) {
if (preg_match('/RRC/', $reference)) {
$num = explode(' ', $reference);
$row = array();
//generate record metadata array
$row = construct_metadata($record);
$row['reference'] = $reference;
//ignore uncertain coins
