fetchField 和 fetchColumn
public function fetchField($index = 0) { // Call PDOStatement::fetchColumn to fetch the field. return $this->fetchColumn($index); }
想不到fetchColumn和fetchField一样
fetchField就是获取一个结果集(1个)
public function fetchField($index = 0) { // Call PDOStatement::fetchColumn to fetch the field. return $this->fetchColumn($index); }
想不到fetchColumn和fetchField一样
fetchField就是获取一个结果集(1个)