背景和需求
就好比说页面导航的左侧是分类，分类下面有很多链接。我现在想统计所有分类下面点击次数最多的一个，并把其颜色做特殊处理！
大致的数据结构如下：
{
"content": [
{
"id": "1",
"name": "htmldrive",
"url": "http://www.htmldrive.net/",
"cate": "前端开发",
"clickpoint": "100"
},
{
"id": "2",
"name": "17素材网",
"url": "http://www.17sucai.com/",
"cate": "前端开发",
"clickpoint": "151"
},
{
"id": "3",
"name": "阿里妈妈图标库",
"url": "http://www.iconfont.cn/",
"cate": "前端开发",
"clickpoint": "2"
},
{
"id": "53",
"name": "Animate.css",
"url": "http://www.haorooms.com/uploads/example/Animatecss/",
"cate": "前端开发",
"clickpoint": "21"
},
{
"id": "55",
"name": "Dafont",
"url": "http://www.dafont.com/",
"cate": "字体",
"clickpoint": "1"
}
]
}
方法和思路
最好的处理方式是在后端PHP中对齐进行处理。
思路：我们可以创建一个新的过渡数组，对原来的数组进行循环，创建一个分类的数组，然后把点击次数中的最大值和ID放到这个数组中。通过比较，获取分类中点击次数最多的ID和点击次数，然后把这个次数最多的ID放在一个新的数组中，循环原来的数据，通过inarray(),函数判断次数最多的ID是不是在这个数组当中，是的话，就给数据增加一个标示字段1，不是的话就是0。那么标示字段为1的就是分类中点击次数最多的。
调整之后输出的json是：
{
"content": [
{
"id": "1",
"name": "htmldrive",
"url": "http://www.htmldrive.net/",
"cate": "前端开发",
"clickpoint": "100",
"max": 0
},
{
"id": "2",
"name": "17素材网",
"url": "http://www.17sucai.com/",
"cate": "前端开发",
"clickpoint": "151",
"max": 1
},
{
"id": "3",
"name": "阿里妈妈图标库",
"url": "http://www.iconfont.cn/",
"cate": "前端开发",
"clickpoint": "2",
"max": 0
},
{
"id": "53",
"name": "Animate.css",
"url": "http://www.haorooms.com/uploads/example/Animatecss/",
"cate": "前端开发",
"clickpoint": "21",
"max": 0
},
{
"id": "55",
"name": "Dafont",
"url": "http://www.dafont.com/",
"cate": "字体",
"clickpoint": "1",
"max": 0
}
]
}
php的代码如下：
$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'];
}
}
}
$temp_id = array(); //创建一个存放ID的临时数组
foreach ($temp_arr as $val) {//循环之前创建的临时数组，存放分类和最多点击次数的
$temp_id[] = $val['id']; //将点击次数最多的ID赋值给了临时数组
}
foreach ($res as $key => $vals) { //循环原来的数据
if(in_array($vals['id'], $temp_id)){//如果次数最多的ID在原来的数组的ID中，那个加一个字段max并设置其值为1
$res[$key]['max'] =1;
}else{
$res[$key]['max'] =0;//否则不是点击次数最多的，设置为0
}
}
$result['content'] = $res;
die(json_encode($result)); //json输出
exit();
