背景和需求
就好比說頁面導航的左側是分類，分類下面有很多鏈接。我現在想統計所有分類下面點擊次數最多的一個，并把其顏色做特殊處理！
大致的數據結構如下：
{
"content": [
{
"id": "1",
"name": "叩殼網",
"url": "http://www.kouke5.com/",
"cate": "前端開發",
"clickpoint": "100"
},
{
"id": "2",
"name": "服務器之家",
"url": "http://www.zmynmublwnt.cn/",
"cate": "前端開發",
"clickpoint": "151"
},
{
"id": "3",
"name": "阿里媽媽圖標庫",
"url": "http://www.iconfont.cn/",
"cate": "前端開發",
"clickpoint": "2"
},
{
"id": "53",
"name": "Animate.css",
"url": "http://www.haorooms.com/uploads/example/Animatecss/",
"cate": "前端開發",
"clickpoint": "21"
},
{
"id": "55",
"name": "Dafont",
"url": "http://www.dafont.com/",
"cate": "字體",
"clickpoint": "1"
}
]
}
如何對這些數據進行分類高亮顯示呢？
方法和思路
最好的處理方式是在后端PHP中對齊進行處理。
思路：我們可以創建一個新的過渡數組，對原來的數組進行循環，創建一個分類的數組，然后把點擊次數中的最大值和ID放到這個數組中。通過比較，獲取分類中點擊次數最多的ID和點擊次數，然后把這個次數最多的ID放在一個新的數組中，循環原來的數據，通過inarray(),函數判斷次數最多的ID是不是在這個數組當中，是的話，就給數據增加一個標示字段1，不是的話就是0。那么標示字段為1的就是分類中點擊次數最多的。
調整之后輸出的json是：
{
"content": [
{
"id": "1",
"name": "叩殼網",
"url": "http://www.kouke5.com/",
"cate": "前端開發",
"clickpoint": "100",
"max": 0
},
{
"id": "2",
"name": "服務器之家",
"url": "http://www.zmynmublwnt.cn/",
"cate": "前端開發",
"clickpoint": "151",
"max": 1
},
{
"id": "3",
"name": "阿里媽媽圖標庫",
"url": "http://www.iconfont.cn/",
"cate": "前端開發",
"clickpoint": "2",
"max": 0
},
{
"id": "53",
"name": "Animate.css",
"url": "http://www.haorooms.com/uploads/example/Animatecss/",
"cate": "前端開發",
"clickpoint": "21",
"max": 0
},
{
"id": "55",
"name": "Dafont",
"url": "http://www.dafont.com/",
"cate": "字體",
"clickpoint": "1",
"max": 0
}
]
}
php的代碼如下：
$sql = "select id,name,url,cate,clickpoint from commonwebsite order by id asc ";
$res= $db->getAll($sql);
$temp_arr = array();
foreach ($res as $key => $value) {
if(!isset($temp_arr[$value['cate']])){
$temp_arr[$value['cate']] = array();
$temp_arr[$value['cate']]['max'] = $value['clickpoint'];
$temp_arr[$value['cate']]['id'] = $value['id'];
}else{
if($value['clickpoint']>$temp_arr[$value['cate']]['max']){
$temp_arr[$value['cate']]['max'] = $value['clickpoint'];
$temp_arr[$value['cate']]['id'] = $value['id'];
}
}
}
$temp_id = array(); //創建一個存放ID的臨時數組
foreach ($temp_arr as $val) {//循環之前創建的臨時數組，存放分類和最多點擊次數的
$temp_id[] = $val['id']; //將點擊次數最多的ID賦值給了臨時數組
}
foreach ($res as $key => $vals) { //循環原來的數據
if(in_array($vals['id'], $temp_id)){//如果次數最多的ID在原來的數組的ID中，那個加一個字段max并設置其值為1
$res[$key]['max'] =1;
}else{
$res[$key]['max'] =0;//否則不是點擊次數最多的，設置為0
}
}
$result['content'] = $res;
die(json_encode($result)); //json輸出
exit();
