Page 233 - Building Digital Libraries

<?php
/**
* Version 1.0
*—initial version
*—supports OpenSearch 1.0, http://opensearch.a9.com
*
* @Based on the WordPress opensearch plugin
* @http://williamsburger.com/wb/archives/opensearch-v-1–0
*/
function extract_description($s, $max) {
$words = explode(“ “, htmlspecialchars($s));
if (count($words)>$max) {
return implode(‘ ‘,array_slice($words, 0, $max-1)) . “[ . . . ]”;
} else {
return $s;
}
}
//Constants
define(“CONST_TITLE,” “title”);
define(“CONST_DESCRIPT,” “descri”);
define(“CONST_SUBJECT,” “subjec”);
define(“CONST_CREATOR,” “creato”);
if (isset($_GET[“searchTerms”])) { $searchTerms = $_GET[“searchTerms”]; } else { $searchTerms = ““; }
if (isset($_GET[“startIndex”])) { $startIndex = $_GET[“startIndex”]; } else { $startIndex = 1; }
if (isset($_GET[“startPage”])) { $startPage = $_GET[“startPage”]; } else { $startPage = 1; }
if (isset($_GET[“count”])) { $count = $_GET[“count”]; } else { $count = 10; }
$records = array();
if (!empty($searchTerms)) {
$total = 0;
$contents = file_get_contents(“https://library.osu.edu/dc/catalog?utf8=%E2%9C%93&per_page=$count&
q=$searchTerms&format=json”);
$contents = utf8_encode($contents);
$contents = json_decode($contents, true);
if (count($contents) > 0) {
$totalResults = $contents[“total”];
$records = $contents[“docs”];
}
}
?>
<?php header( “Content-type: text/xml;\n\n “ , true ); ?>
<?php echo ‘<?xml version=“1.0” encoding=“utf-8” ?’ . ‘>‘; ?>
<rss version=“2.0”
xmlns:content=“http://purl.org/rss/1.0/modules/content/”
xmlns:wfw=“http://wellformedweb.org/CommentAPI/”
xmlns:dc=“http://purl.org/dc/elements/1.1/”
xmlns:openSearch=“http://a9.com/-/spec/opensearchrss/1.1/”
>
<channel>
<title>Test Title</title>
<link>http://reeset.net/anonymous/osu_dc.php</link>
<description>Test Description</description>
<pubDate><?php echo date( ‘D, d M Y H:i:s +0000’); ?></pubDate>
<generator>OSU PHP Sample Generator</generator>
<language>English</language>
<openSearch:totalResults><?=$totalResults?></openSearch:totalResults>
<openSearch:startIndex><?=$startIndex?></openSearch:startIndex>
<openSearch:itemsPerPage><?=$count?></openSearch:itemsPerPage>
<?php if ( $records ) {
$items_count = 1; ?>
<?php foreach ( $records as $record ) {?>
<item>
<title><?=$record[“title”][0]?></title>

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