added values for Pdo fetchValue and fetchFirst

SE/se-lib/Core/Pdo.php

@@ -413,16 +413,26 @@ EOF_STRUCT_MYSQL;
 		return null;
 	}
 
-	// for sql like `select count() from ...`
-	public function fetchValue($sql) {
-		DBG::log($sql, 'sql');
-		$sth = $this->query($sql);
+	public function fetchValue($sql, $values = []) { // for sql like `select count() from ...`
+		$sth = $this->prepare($sql);
+		if (!empty($values)) {
+			$this->bindValues($sth, $values);
+			DBG::log($this->getRawSql($sth), 'sql');
+		} else {
+			DBG::log($sql, 'sql');
+		}
+		$sth->execute();
 		return $sth->fetchColumn();
 	}
 
-	public function fetchFirst($sql) {// fetch only first row
-		DBG::log($sql, 'sql');
+	public function fetchFirst($sql, $values = []) { // fetch only first row
 		$sth = $this->prepare($sql);
+		if (!empty($values)) {
+			$this->bindValues($sth, $values);
+			DBG::log($this->getRawSql($sth), 'sql');
+		} else {
+			DBG::log($sql, 'sql');
+		}
 		$sth->execute();
 		return $sth->fetch();
 	}