function get_rqvar(&$env, $name, $type = false)
{
if (!isset($env[$name])) {
set_status_and_exit(400, "{$name} is a required variable");
}
if ($type !== false) {
if ($type != "array" && is_array($env[$name])) {
set_status_and_exit(400, "{$name} is formatted improperly.");
}
if ($type == "array" && !is_array($env[$name])) {
return array($env[$name]);
}
if ($type == "integer") {
return intval($env[$name]);
}
if ($type == "float") {
return floatval($env[$name]);
}
if ($type == "time") {
return parseTime($env[$name]);
}
}
return $env[$name];
}
}
}
return $image;
}
$height = get_rqvar($_GET, "h", "integer");
$width = get_rqvar($_GET, "w", "integer");
$data = get_rqvar($_GET, "data", "string");
if ($height < 1 || $width < 1) {
set_status_and_exit(400, "height and width must be positive");
}
$allowed_img_types = array("png", "jpg");
$imgtype = "png";
if (isset($_GET['img'])) {
$imgtype = strtolower($_GET['img']);
if (!in_array($imgtype, $allowed_img_types)) {
set_status_and_exit(400, "unsupported image format: {$imgtype}");
}
}
$parts = explode("/", $data);
if (isset($_GET['N'])) {
$upper = $_GET['N'];
} else {
$upper = -1;
}
if (count($parts) > 1) {
$idents = explode(";", $parts[1]);
foreach ($idents as &$ids) {
$ids = explode(",", $ids);
for ($i = 0; $i < count($ids); $i++) {
$ids[$i] = intval($ids[$i]);
if ($ids[$i] > $upper) {
// query
//$csv = isset($_GET['csv']) && $_GET['csv'] == 1; // comma-separated values?
$q = trim($q);
if (strncmp($q, '@', 1) === 0) {
$q = trim(substr($q, 1));
if (strlen($q) == 0) {
echo "{}";
return;
}
$cond = "title LIKE '%{$q}%'";
} else {
$cond = "course LIKE '{$q}%'";
}
$query = <<<END
\tSELECT\tDISTINCT c.subject, CONCAT(c.number, c.suffix) AS name, c.title
\tFROM\tN_COURSE c, NX_COURSE x
\tWHERE c.crs_id = x.crs_id AND x.{$cond}
\tLIMIT\t0, 20
END;
$res = $conn->query($query);
if (!$res) {
set_status_and_exit(400, "MySQL Error: " . $conn->error);
}
$data = array();
$q = strtoupper($q);
while ($row = $res->fetch_row()) {
$data[] = array("title" => "{$row['2']}", "value" => "{$row['0']}{$row['1']}", "path" => "{$row['0']}/{$row['1']}");
}
ob_start("ob_gzhandler");
header("Content-Type: application/json");
echo json_encode(array("seq" => $seq, "data" => &$data));
