function get_val($input)
{
if (is_bool($input)) {
return $input ? 'true' : 'false';
}
if (is_numeric($input)) {
return $input;
}
if (is_null($input)) {
return "NULL";
}
return '"' . safe_val($input) . '"';
}
//counts counts number of uses of each end point
$counts = array();
if (is_array($sel)) {
foreach ($sel as $row) {
foreach (array('end1', 'end2') as $fld) {
if (!isset($counts[$row[$fld]])) {
$counts[$row[$fld]] = 0;
}
$counts[$row[$fld]]++;
}
}
}
//sort by number of uses and convert value from just count to count and stop/station name
arsort($counts);
foreach ($counts as $pnum => $val) {
$counts[$pnum] = $val . ' ' . safe_val($stops, $pnum);
}
//go through list of stops and find any stop not in the counts
//all stop records of a given type
$missing = array();
foreach ($stops as $pnum => $stop) {
if (!isset($counts[$pnum])) {
$missing[$pnum] = $stop;
}
}
qpre(count($missing), $missing, count($sel), count($counts), $counts);
}
break;
case 10:
//used to run isolated shortest path test for specific nodes
$data = file_get_contents($links_path, FILE_BINARY);
