Displaying bread crumbs array keyed to number of segments - pdo

Question

I just converted a query that displays "bread crumbs" style navigation links to PDO:
function get_path($dbh,$node,$TopnavTable, $TopnavName) {
$stmt = $dbh->prepare("SELECT name FROM $TopnavTable WHERE $TopnavName = ?");
$stmt->bindValue(1,$node);
$stmt->execute();
$stmt->setFetchMode(PDO::FETCH_ASSOC);
$row = $stmt->fetch();
$path = array_merge(get_path($pdo,$row['Parent'], $TopnavTable, $TopnavName), $path);
return $path ;
}
I also figured out how to display the results:
$Path2 = explode("/", $path);
$Path2[1] = ''.$Path2[1].'';
$Path2[2] = ''.$Path2[2].'';
$Path2[3] = '<span class="navHere"><b>'.$Path2[3].'</b></span>';
echo join( $Path2, ' > ' );
But there's a catch. The above works only if I'm working with an array consisting of three segments. For example, I'm viewing the URL MySite/Topics/Washington/Governor, which displays the following bread crumbs trail:
Topics > Washington > Governor
If I view MySite/Washington, it should display...
Topics > Washington
But I get an error message: Undefined offset: 3
So I'm trying to figure out how to make this work with any number of segments - 2, 3, 6, etc. Regardless of the number of segments, I'd like the last segment to be unlinked. (I'm going to further put it inside a span.) Does anyone have any tips?

Answer 1

When $path has only 3 members your code works. You have to modify your code to suit if different using array function count() & then loop through array.
$path ="Topics/Washington/Governor/Trash";
$Path2 = explode("/", $path);
$arrlength=count($Path2);
$html =''.$Path2[0].' > ';//First Member
for($x=1;$x<$arrlength-1;$x++) {//Between first & last
$html .= ''.$Path2[$x].' > ' ;
}
$html .= '<span class="navHere"><b>'.$Path2[$x].'</b></span>';//Last member
echo $html ;
RESULT for 3
Topics > Washington > Governor
for 2
Topics > Washington