Allow truncation of backtrace

1 files changed, 6 insertions, 2 deletions

diff --git a/it_debug.class b/it_debug.class
index 0d0dd07..8b3fd2a 100644
--- a/it_debug.class
+++ b/it_debug.class
@@ -168,7 +168,8 @@ function dump($args)
 }
 
 /**
- * Print short stackdump
+ * Return short stackdump
+ * @param $p['levels'] number of stack levels to return (default: 0 = all)
  * @param $p['skiplevels'] number of stack levels to omit
  * @param $p['skipfiles'] regular expression of filenames to omit
  */
@@ -177,7 +178,7 @@ function backtrace($p = array())
 	if (!is_array($p))
 		$p = array('skiplevels' => $p);
 
-	$p += array('skiplevels'=> 0, 'skipfiles' => "###");
+	$p += array('levels' => 0, 'skiplevels'=> 0, 'skipfiles' => "###");
 
 	if (!function_exists('memory_get_usage') || (memory_get_usage() < 50000000))
 	{
@@ -187,6 +188,9 @@ function backtrace($p = array())
 			{
 				$fn = (it::match('auto_prepend', $fn) ? basename(dirname($fn)) . "/" : "") . basename($fn);
 				$result[] = $fn . ":" . $call['line'];
+
+				if (--$p['levels'] == 0)
+					break;
 			}
 		}
 	}