Php/docs/yaz.examples
Examples
PHP/YAZ keeps track of connections with targets (Z-Associations). A resource represents a connection to a target.
The script below demonstrates the parallel searching feature of
the API. When invoked with no arguments it prints a query form; else
(arguments are supplied) it searches the targets as given in array
host.
Example #1 Parallel searching using Yaz
<?php$host=$_REQUEST[host];$query=$_REQUEST[query];$num_hosts = count($host);if (empty($query) || count($host) == 0) { echo '<form method="get"> <input type="checkbox" name="host[]" value="bagel.indexdata.dk/gils" /> GILS test <input type="checkbox" name="host[]" value="localhost:9999/Default" /> local test <input type="checkbox" checked="checked" name="host[]" value="z3950.loc.gov:7090/voyager" /> Library of Congress <br /> RPN Query: <input type="text" size="30" name="query" /> <input type="submit" name="action" value="Search" /> </form> '; } else { echo 'You searched for ' . htmlspecialchars($query) . '<br />'; for ($i = 0; $i < $num_hosts; $i++) { $id[] = yaz_connect($host[$i]); yaz_syntax($id[$i], "usmarc"); yaz_range($id[$i], 1, 10); yaz_search($id[$i], "rpn", $query); } yaz_wait(); for ($i = 0; $i < $num_hosts; $i++) { echo '<hr />' . $host[$i] . ':'; $error = yaz_error($id[$i]); if (!empty($error)) { echo "Error: $error"; } else { $hits = yaz_hits($id[$i]); echo "Result Count $hits"; } echo '<dl>'; for ($p = 1; $p <= 10; $p++) { $rec = yaz_record($id[$i], $p, "string"); if (empty($rec)) continue; echo "<dt><b>$p</b></dt><dd>"; echo nl2br($rec); echo "</dd>"; } echo '</dl>'; }}?>
