php - 转义后的正确语法？

Question

转义后写的正确语法是什么？

("SELECT torrent_download
FROM " . DB_PREFIX . "auctions WHERE
                auction_id='" . $item_details['auction_id'] . ); 

我得到的错误是意外的'）'

我尝试了各种 " 和 ' 但似乎没有一个工作

Answer 1

看起来您在 final 之前缺少一个结束语'，它会用双引号括起来$item_details['auction_id'])"'");

("SELECT torrent_download
  FROM " . DB_PREFIX . "auctions WHERE
            auction_id='" . $item_details['auction_id'] . "'");

为了在双引号字符串中节省一点麻烦，我建议使用{}附件而不是连接所有引号。但是，您不能将常量 括起来DB_PREFIX。

("SELECT torrent_download
  FROM " . DB_PREFIX . "auctions WHERE
        auction_id='{$item_details['auction_id']}'");

Answer 2

("SELECT torrent_download
 FROM " . DB_PREFIX . "auctions WHERE
            auction_id='" . $item_details['auction_id'] . "'");

你试过吗？又是“后跟”。

Answer 3

("SELECT torrent_download
FROM " . DB_PREFIX . "auctions WHERE
            auction_id='" . $item_details['auction_id'] ."'" );