Array
(
[0] => Array
(
[entity_id] => 10
[product_id] => 424
[city] => 18
[sort_order] => 10
[deal_type_id] => dow
[deal_from_date] => 2010-12-18
[deal_to_date] => 2026-02-19
)
[1] => Array
(
[entity_id] => 11
[product_id] => 423
[city] => 18
[sort_order] => 11
[deal_type_id] => dow
[deal_from_date] => 2010-12-18
[deal_to_date] => 2027-02-19
)
[2] => Array
(
[entity_id] => 12
[product_id] => 422
[city] => 18
[sort_order] => 12
[deal_type_id] => dow
[deal_from_date] => 2011-12-18
[deal_to_date] => 2030-01-19
)
[3] => Array
(
[entity_id] => 13
[product_id] => 420
[city] => 18
[sort_order] => 13
[deal_type_id] => dow
[deal_from_date] => 2011-12-18
[deal_to_date] => 2030-01-19
)
[4] => Array
(
[entity_id] => 1
[product_id] => 463
[city] => 18
[sort_order] => 1
[deal_type_id] => dod
[deal_from_date] => 2013-12-18
[deal_to_date] => 2025-01-19
)
[5] => Array
(
[entity_id] => 2
[product_id] => 452
[city] => 18
[sort_order] => 2
[deal_type_id] => dom
[deal_from_date] => 2013-12-18
[deal_to_date] => 2026-01-19
)
[6] => Array
(
[entity_id] => 3
[product_id] => 448
[city] => 18
[sort_order] => 3
[deal_type_id] => dod
[deal_from_date] => 2013-12-18
[deal_to_date] => 2027-01-19
)
[7] => Array
(
[entity_id] => 4
[product_id] => 441
[city] => 18
[sort_order] => 4
[deal_type_id] => dod
[deal_from_date] => 2013-12-18
[deal_to_date] => 2024-01-19
)
[8] => Array
(
[entity_id] => 5
[product_id] => 440
[city] => 18
[sort_order] => 5
[deal_type_id] => dod
[deal_from_date] => 2013-12-18
[deal_to_date] => 2027-01-19
)
[9] => Array
(
[entity_id] => 6
[product_id] => 439
[city] => 18
[sort_order] => 6
[deal_type_id] => dom
[deal_from_date] => 2013-12-18
[deal_to_date] => 2028-01-19
)
[10] => Array
(
[entity_id] => 7
[product_id] => 433
[city] => 18
[sort_order] => 7
[deal_type_id] => dom
[deal_from_date] => 2013-12-18
[deal_to_date] => 2013-01-19
)
[11] => Array
(
[entity_id] => 8
[product_id] => 427
[city] => 18
[sort_order] => 8
[deal_type_id] => dod
[deal_from_date] => 2013-12-18
[deal_to_date] => 2022-01-19
)
[12] => Array
(
[entity_id] => 9
[product_id] => 425
[city] => 18
[sort_order] => 9
[deal_type_id] => dom
[deal_from_date] => 2013-12-18
[deal_to_date] => 2025-02-19
)
)
我需要比较上一个键和下一个键的deal_from_date。 如果两者相同，那么我需要检查deal_to_date中的刨丝器值。 如果我发现两个deal_to_date的值都不同，则按更大的顺序排序。
for($i=0;$i<count($result);$i++)
{
if(array_key_exists($i+1, $result))
{
if(strtotime($result[$i]['deal_from_date']) == strtotime($result[$i+1]['deal_from_date']))
{
echo $i;
if(strtotime($result[$i]['deal_to_date']) < strtotime($result[$i+1]['deal_to_date']))
{
$firstArray = $result[$i];
unset($result[$i]);
$secondArray = $result[$i+1];
unset($result[$i]);
$result[$i] = $secondArray;
$result[$i+1] = $firstArray;
}
}
}
}
Array
(
[0] => Array
(
[entity_id] => 11
[product_id] => 423
[city] => 18
[sort_order] => 11
[deal_type_id] => dow
[deal_from_date] => 2010-12-18
[deal_to_date] => 2027-02-19
)
[1] => Array
(
[entity_id] => 10
[product_id] => 424
[city] => 18
[sort_order] => 10
[deal_type_id] => dow
[deal_from_date] => 2010-12-18
[deal_to_date] => 2026-02-19
)
[1] => Array
(
[entity_id] => 12
[product_id] => 422
[city] => 18
[sort_order] => 12
[deal_type_id] => dow
[deal_from_date] => 2011-12-18
[deal_to_date] => 2030-01-19
)
[2] => Array
(
[entity_id] => 13
[product_id] => 420
[city] => 18
[sort_order] => 13
[deal_type_id] => dow
[deal_from_date] => 2011-12-18
[deal_to_date] => 2030-01-19
)
[3] => Array
(
[entity_id] => 2
[product_id] => 452
[city] => 18
[sort_order] => 2
[deal_type_id] => dom
[deal_from_date] => 2013-12-18
[deal_to_date] => 2026-01-19
)
[4] => Array
(
[entity_id] => 1
[product_id] => 463
[city] => 18
[sort_order] => 1
[deal_type_id] => dod
[deal_from_date] => 2013-12-18
[deal_to_date] => 2025-01-19
)
[5] => Array
(
[entity_id] => 3
[product_id] => 448
[city] => 18
[sort_order] => 3
[deal_type_id] => dod
[deal_from_date] => 2013-12-18
[deal_to_date] => 2027-01-19
)
[6] => Array
(
[entity_id] => 6
[product_id] => 439
[city] => 18
[sort_order] => 6
[deal_type_id] => dom
[deal_from_date] => 2013-12-18
[deal_to_date] => 2028-01-19
)
[7] => Array
(
[entity_id] => 5
[product_id] => 440
[city] => 18
[sort_order] => 5
[deal_type_id] => dod
[deal_from_date] => 2013-12-18
[deal_to_date] => 2027-01-19
)
[8] => Array
(
[entity_id] => 9
[product_id] => 425
[city] => 18
[sort_order] => 9
[deal_type_id] => dom
[deal_from_date] => 2013-12-18
[deal_to_date] => 2025-02-19
)
[9] => Array
(
[entity_id] => 4
[product_id] => 441
[city] => 18
[sort_order] => 4
[deal_type_id] => dod
[deal_from_date] => 2013-12-18
[deal_to_date] => 2024-01-19
)
[10] => Array
(
[entity_id] => 8
[product_id] => 427
[city] => 18
[sort_order] => 8
[deal_type_id] => dod
[deal_from_date] => 2013-12-18
[deal_to_date] => 2022-01-19
)
[11] => Array
(
[entity_id] => 7
[product_id] => 433
[city] => 18
[sort_order] => 7
[deal_type_id] => dom
[deal_from_date] => 2013-12-18
[deal_to_date] => 2013-01-19
)
)
如果从日期开始的多个交易是同一日期，我需要对数组进行排序。 然后根据Deal_to_date desc进行排序。仅适用于同一组。
答案 0 :(得分：0)
只需使用usort()函数，如下所示：
function sorter($a,$b){return $a["deal_from_date"]<=>$b["deal_from_date"]}
usort($array,sorter)
我希望这会对您有所帮助！
答案 1 :(得分：0)
如果我的理解正确，则您尝试先将deal_from_date升序进行排序，如果它们相等，则将deal_to_date降序进行排序。
您可以使用usort做这样的事情：
usort($array, function (array $entry1, array $entry2) {
return new \DateTime($entry1['deal_from_date']) <=> new \DateTime($entry2['deal_from_date'])
?: (new \DateTime($entry2['deal_to_date']) <=> new \DateTime($entry1['deal_to_date']));
});
您可以添加任意数量的?: (value1 <=> value2)进行后备排序。
现在看来似乎无法产生您发布的确切输出，但是您应该可以轻松地从那里进行调整。