1 files changed, 13 insertions, 1 deletions
diff --git a/inc/util.inc.php b/inc/util.inc.php
index 81c7d807..c3e70f89 100644
--- a/inc/util.inc.php
+++ b/inc/util.inc.php
@@ -590,11 +590,23 @@ SADFACE;
 	{
 		$regex = '/
 			  (
-				 (?: [\x20-\xFF] ){1,100}        # ignore lower non-printable range
+				 [\x20-\xFF]{1,100}        # ignore lower non-printable range
 			  )
 			| .                                 # anything else
 			/x';
 		return iconv('MS-ANSI', 'UTF-8', preg_replace($regex, '$1', $string));
 	}
 
+	/**
+	 * Clamp given value into [min, max] range.
+	 */
+	public static function clamp(int &$value, int $min, int $max)
+	{
+		if ($value < $min) {
+			$value = $min;
+		} elseif ($value > $max) {
+			$value = $max;
+		}
+	}
+
 }