Error Number: 1064

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE board_id = ''' at line 1

SELECT user_id FROM WHERE board_id = ''

Filename: D:\xampp\htdocs\bbs\system\database\DB_driver.php

Line Number: 330

/**
 * 게시물 작성자 아이디 반환
 *
 * @return String 작성자 아이디
 */
function writer_check()
{
 $table = $this->uri->segment(3);
 $board_id =$this->uri->segment(5);

 $sql = "SELECT user_id FROM ".$table." WHERE board_id = '".$board_id."'";
 $query = $this->db->query($sql);

 return $query->row();
}

sendRequest("/bbs/ajax_board/ajax_comment_delete", name, delete_action, "POST");

// 글 작성자가 본인인지 검증
$writer_id = $this->board_m->writer_check($table, $board_id);

function writer_check($table, $board_id)
{
 $sql = "SELECT user_id FROM ".$table." WHERE board_id = '".$board_id."'";

 $query = $this->db->query($sql);

 return $query->row();
}