這篇文章主要介紹的內容是關於PHP 實現瀏覽記錄並按日期分組，有著一定的參考價值，現在分享給大家，有需要的朋友可以參考一下
現有測試數據如下，要求實現如下圖中的效果：
array(4) {
[0] => array(6) {
["visit_id"] => int(127)
["goods_id"] => int(16)
["visittime"] => int(1494399935)
["goods_name"] => string(53) "OPPO R9s 全网通4G+64G 双卡双待手机 玫瑰金"
["shop_price"] => string(6) "500.00"
}
[1] => array(6) {
["visit_id"] => int(124)
["goods_id"] => int(13)
["visittime"] => int(1494399921)
["goods_name"] => string(76) "SIEMENS/西门子 KA92NV09TI双开门家用对开门电冰箱变频旗舰款"
["shop_price"] => string(7) "4000.00"
}
[2] => array(6) {
["visit_id"] => int(123)
["goods_id"] => int(27)
["visittime"] => int(1494399903)
["goods_name"] => string(85) "爱他美白金版Aptamil 幼儿配方奶粉3段(12-36个月适用)900g(欧洲进口)"
["shop_price"] => string(6) "329.00"
}
[3] => array(6) {
["visit_id"] => int(120)
["goods_id"] => int(26)
["visittime"] => int(1494224263)
["goods_name"] => string(21) "欢乐谷免票一张"
["shop_price"] => string(5) "50.00"
}
}登入後複製 |
還沒實現之前我想這個程式碼不知道要O(n)呢還是更高的複雜度才能實現，細想一下，其實php的陣列底層就是哈希實現的，如何簡單利用這個特性讓複雜度降到O(1)呢？
show me the code：
|
/* 浏览记录按日期分组 */
function groupVisit($visit)
{
$curyear = date('Y');
$visit_list = [];
foreach ($visit as $v) {
if ($curyear == date('Y', $v['visittime'])) {
$date = date('m月d日', $v['visittime']);
} else {
$date = date('Y年m月d日', $v['visittime']);
}
$visit_list[$date][] = $v;
}
return $visit_list;
}
說明：入參$visit 是上面一開始的測試數據，函數中也對使用者體驗做了一些最佳化，例如，你的瀏覽記錄總是顯示出今年的年份，是不是感覺有點冗餘，所以如果是本年份的話，年份就要隱藏起來，其他年份還是照樣顯示出來。不然程式碼會更簡潔。
好了上面的測試資料經過該函數之後，再把回傳值印出來，有：
##8 9 10111213#14#15#16# 17181920#21 | #22
##24 |
34
array(2) {
["05月10日"] => array(3) {
[0] => array(6) {
["visit_id"] => int(127)
["goods_id"] => int(16)
["visittime"] => int(1494399935)
["goods_name"] => string(53) "OPPO R9s 全网通4G+64G 双卡双待手机 玫瑰金"
["shop_price"] => string(6) "500.00"
}
[1] => array(6) {
["visit_id"] => int(124)
["goods_id"] => int(13)
["visittime"] => int(1494399921)
["goods_name"] => string(76) "SIEMENS/西门子 KA92NV09TI双开门家用对开门电冰箱变频旗舰款"
["shop_price"] => string(7) "4000.00"
}
[2] => array(6) {
["visit_id"] => int(123)
["goods_id"] => int(27)
["visittime"] => int(1494399903)
["goods_name"] => string(85) "爱他美白金版Aptamil 幼儿配方奶粉3段(12-36个月适用)900g(欧洲进口)"
["shop_price"] => string(6) "329.00"
}
}
["05月08日"] => array(1) {
[0] => array(6) {
["visit_id"] => int(120)
["goods_id"] => int(26)
["visittime"] => int(1494224263)
["goods_name"] => string(21) "欢乐谷免票一张"
["shop_price"] => string(5) "50.00"
}
}
}以上是PHP 實作瀏覽記錄並按日期分組的詳細內容。更多資訊請關注PHP中文網其他相關文章！
