« mysqli_stmt::fetch mysqli_stmt::free_result » PHP Manual MySQLi_STMT Returns the number of field in the given statement mysqli_stmt::$field_count mysqli_stmt_field_count (PHP 5, PHP 7) mysqli_stmt::$field_count -- mysqli_stmt_field_count — Returns the number of field in the given statement 说明 面向对象风格 int $mysqli_stmt->field_count; 过程化风格 mysqli_stmt_field_count ( mysqli_stmt $stmt ) : int Warning 本函数还未编写文档,仅有参数列表。