Question

我有两组对象数组，例如
组1 ：（已在SQL查询中按标题排序）
[{id: 21, title: "a"},{id: 62, title: "ab"},{id: 35, title: "abc"}]

第2组：（已在SQL查询中按标题排序）
[{id: 23, title: "aba"},{id: 54, title: "abb"},{id: 46, title: "abe"}]

实际上，实际数据更加复杂，因此我无法在MYSQL Query中进行合并和排序。我知道我可以按array_merge和usort进行合并和排序但是我怀疑是否使用for循环进行排序会更快，因为这两个组已经进行了排序。

请问您提供一种更好的方法来使用for循环排序还是任何其他更好的方法？谢谢。

我的原始查询是

第1组
SELECT a.*, c.state, c.version, c.len, c.price, GROUP_CONCAT(d.tag) AS tag, e.keywords, e.description, e.cat, e.cover, f.url AS cover_url, f.server AS cover_server, h.url AS thumbnail_url, h.zip AS thumbnail_zip FROM ro_final_entries a LEFT JOIN ro_book_tag b ON b.bid = a.id AND a.id NOT IN (SELECT bookID FROM ro_app_bookshelf WHERE specify=1) INNER JOIN ro_version c ON c.id = a.id AND (c.state = ?) LEFT JOIN ro_final_tag d ON b.tid = d.id LEFT JOIN ro_final_book_info e ON e.id = a.id LEFT JOIN ro_assets f ON substr(SUBSTRING_INDEX(e.cover, '/', 4),10) = f.id LEFT JOIN `ro_final_entries` g ON g.pid = a.id RIGHT JOIN `ro_final_thumbnail` h ON h.bid = g.id AND h.bid AND (h.pid = 'cover' OR (h.page_index = 0 AND h.pid <> 'cover')) WHERE (a.type = 'book')

第2组：
SELECT a.*, c.state, c.version, c.len, c.price, GROUP_CONCAT(d.tag) AS tag, e.keywords, e.description, e.cat, e.cover, f.url AS cover_url, f.server AS cover_server, GROUP_CONCAT(i.url) AS thumbnail_url, GROUP_CONCAT(i.zip) AS thumbnail_zip FROM ro_final_entries a LEFT JOIN ro_book_tag b ON b.bid = a.id AND a.id NOT IN (SELECT bookID FROM ro_app_bookshelf WHERE specify=1) INNER JOIN ro_version c ON c.id = a.id LEFT JOIN ro_final_tag d ON b.tid = d.id LEFT JOIN ro_final_book_info e ON e.id = a.id LEFT JOIN ro_assets f ON substr(SUBSTRING_INDEX(e.cover, '/', 4),10) = f.id LEFT JOIN `ro_final_entries` g ON g.pid = a.id LEFT JOIN `ro_final_entries` h ON h.pid = g.id RIGHT JOIN `ro_final_thumbnail` i ON i.bid = h.id AND i.bid AND (i.pid = 'cover' OR (i.page_index = 0 AND i.pid <> 'cover')) WHERE (a.type = 'collection')

Answer 1

您可以尝试以下方法对数组进行排序

function sortBy($field, &$array, $direction = 'asc'){
        usort($array, create_function('$a, $b', '
                $a = $a["' . $field . '"];
                $b = $b["' . $field . '"];

                if ($a == $b) return 0;

                $direction = strtolower(trim($direction));

                return ($a ' . ($direction == 'desc' ? '>' : '<') .' $b) ? -1 : 1;
            '));

        return true;
    }

合并两个排序数组的最佳排序方法

1 个答案: