//FETCH FROM PUBMED
if (isset($_POST['fetch-pubmed']) && (!empty($pmid) || !empty($doi)) && isset($_POST['fetch-pubmed'])) {
$response = array();
fetch_from_pubmed($doi, $pmid);
$_POST = array_merge($_POST, $response);
}
// FETCH FROM NASA ADS
if (isset($_POST['fetch-nasaads']) && (!empty($doi) || !empty($nasa_id)) && empty($pmid) && isset($_POST['fetch-nasaads'])) {
$response = array();
fetch_from_nasaads($doi, $nasa_id);
$_POST = array_merge($_POST, $response);
}
// FETCH FROM CROSSREF
if (!empty($doi) && empty($pmid)) {
$response = array();
fetch_from_crossref($doi);
$_POST = array_merge($_POST, $response);
}
########## check for duplicate titles in table library ##########
database_connect($database_path, 'library');
if (!empty($_POST['doi'])) {
$doi_query = $dbHandle->quote($_POST['doi']);
$result = $dbHandle->query("SELECT id,title FROM library WHERE doi={$doi_query} LIMIT 1");
} else {
$title_query = $dbHandle->quote(substr($_POST['title'], 0, -2) . "%");
$result = $dbHandle->query("SELECT id,title FROM library WHERE title LIKE {$title_query} AND length(title) <= " . (strlen($_POST['title']) + 2) . " LIMIT 1");
}
$result = $result->fetchAll(PDO::FETCH_ASSOC);
$dbHandle = null;
if (count($result) > 0) {
$error[] = "Warning! This article is a possible duplicate of:<br>\n\t\t<a href=\"" . htmlspecialchars("stable.php?id=" . urlencode($result[0]['id'])) . "\" style=\"color:#fff;font-weight:bold\" target=\"_blank\">" . htmlspecialchars($result[0]['title']) . "</a>";
}
if (isset($_SESSION['proxy_port'])) {
$proxy_port = $_SESSION['proxy_port'];
}
if (isset($_SESSION['proxy_username'])) {
$proxy_username = $_SESSION['proxy_username'];
}
if (isset($_SESSION['proxy_password'])) {
$proxy_password = $_SESSION['proxy_password'];
}
}
include_once 'functions.php';
########## reference fetching from Crossref ##########
if (isset($_GET['doi'])) {
$response = array();
fetch_from_crossref($_GET['doi']);
extract($response);
$names_str = '';
if (!empty($authors)) {
$names = array();
$new_names = array();
$names = explode(';', $authors);
$names = array_filter($names);
if (!empty($names)) {
foreach ($names as $name) {
$array2 = explode(',', $name);
$last = trim($array2[0]);
$last = substr($array2[0], 3, -1);
$first = trim($array2[1]);
$first = substr($array2[1], 3, -1);
if (!empty($last)) {
