diff --git a/lam/templates/3rdParty/pla/lib/ds_myldap.php b/lam/templates/3rdParty/pla/lib/ds_myldap.php
index 2dd4d1d5..cb07a837 100644
--- a/lam/templates/3rdParty/pla/lib/ds_myldap.php
+++ b/lam/templates/3rdParty/pla/lib/ds_myldap.php
@@ -1065,7 +1065,7 @@ class myldap extends DS {
 		# Record the forward and reverse entries in the cache.
 		foreach ($result as $key => $value) {
 			# translate hex code into ascii for display
-			$result[$key] = $this->unescapeDN($value);
+			$result[$key] = dn_unescape($value);
 
 			$CACHE['explode'][implode(',',$result[0])][$key] = $result[$key];
 			$CACHE['explode'][implode(',',array_reverse($result[0]))][$key] = array_reverse($result[$key]);
@@ -1099,24 +1099,6 @@ class myldap extends DS {
 		return $dn;
 	}
 
-	/**
-	 * Parse a DN and unescape any special characters
-	 */
-	private function unescapeDN($dn) {
-		if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
-			debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
-
-		if (is_array($dn)) {
-			$a = array();
-			foreach ($dn as $key => $rdn)
-				$a[$key] = preg_replace('/\\\([0-9A-Fa-f]{2})/e',"''.chr(hexdec('\\1')).''",$rdn);
-
-			return $a;
-
-		} else
-			return preg_replace('/\\\([0-9A-Fa-f]{2})/e',"''.chr(hexdec('\\1')).''",$dn);
-	}
-
 	public function getRootDSE($method=null) {
 		if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
 			debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
diff --git a/lam/templates/3rdParty/pla/lib/functions.php b/lam/templates/3rdParty/pla/lib/functions.php
index 85e004cc..3f46aedf 100644
--- a/lam/templates/3rdParty/pla/lib/functions.php
+++ b/lam/templates/3rdParty/pla/lib/functions.php
@@ -2393,15 +2393,25 @@ function dn_unescape($dn) {
 		$a = array();
 
 		foreach ($dn as $key => $rdn)
-			$a[$key] = preg_replace('/\\\([0-9A-Fa-f]{2})/e',"''.chr(hexdec('\\1')).''",$rdn);
+			$a[$key] = preg_replace_callback('/\\\([0-9A-Fa-f]{2})/', 'convertHexStringToCharCallback', $rdn);
 
 		return $a;
 
 	} else {
-		return preg_replace('/\\\([0-9A-Fa-f]{2})/e',"''.chr(hexdec('\\1')).''",$dn);
+		return preg_replace_callback('/\\\([0-9A-Fa-f]{2})/', 'convertHexStringToCharCallback', $dn);
 	}
 }
 
+/**
+ * Converts a hex encoded string like \12 to the corresponding character.
+ * 
+ * @param array $hex preg_replace_callback: matching hex string array
+ * @return String character
+ */
+function convertHexStringToCharCallback($hex) {
+	return chr(hexdec($hex[1]));
+}
+
 /**
  * Fetches the URL for the specified item. This is a convenience function for
  * fetching project HREFs (like bugs)