Question

从数组中查找数据。

Array
(

    [0] => Array
        (
            [id] => 2000
            [rating] => 5
            [length] => 89
        )

    [1] => Array
        (
            [id] => 2000
            [rating] => 5
            [length] => 80   
   )

    [2] => Array
        (
            [id] => 2000
            [rating] => 1
            [length] => 105 
       )
   [3] => Array
        (
            [id] => 2000
            [rating] => 5
            [length] => 90 
    )

   [4] => Array
        (
            [id] => 2001
            [rating] => 4
            [length] => 55 
    )
  [5] => Array
        (
            [id] => 2001
            [rating] => 3
            [length] => 55 
    )
)

如果id相同，则为必需条件：

获取具有最高评级的记录。
如果数组中的评分相同，则根据长度（最大长度）得到结果

必需输出：

array(
   [3] => Array
    (
        [0] => 2000
        [1] => 5
        [2] => 90 
   )
  [4] => Array
   (
        [id] => 2001
        [rating] => 4
        [length] => 55 
 )
)

Answer 1

您可以像{/ p>一样使用usort和简单foreach循环

usort($arr,function($a,$b){
    $c = $b['rating'] - $a['rating'];
    $c .= $b['length'] - $a['length'];
    return $c;
});
$result = [];
foreach($arr as $key => $value){
    if(!isset($result[$value['id']])){
        $result[$value['id']] = $value;
    }
}
print_r(array_values($result));

Answer 2

（我认为你应该重新制定你的问题，它非常混乱......）

如果你需要排序，也许你可以使用foreach（）。

//$max = 0;
foreach( $arrayWithSameIds as $key => $element){

  if($element['rating'] > $max){ 
    //$max = $element;
  }else if($element['rating'] == $max){
    //compare $max['length'] and $element['length']
  }else{

  }

}

我不满足于你所寻找的......

来自多维数组的填充数据

2 个答案: