配列を特定のキーの値順で並び替えたい

Question

phpの配列で特定のキーの大きい順に並び替えるにはどうしたらいいでしょうか?

このデータをuriage_kingaku順に並び替えたい
元データ

Array (
[0][uriage_kingaku] => 0 [uriage_zei] => 0 ) 
[1] => Array ([uriage_kingaku] => 16066805 [uriage_zei] => 1285344.4 ) 
[2] => Array ([uriage_kingaku] => 5614953 [uriage_zei] => 449196.24 )
[3] => Array ([uriage_kingaku] => 3249195 [uriage_zei] => 259935.6 ) 
[4] => Array ([uriage_kingaku] => 6685074 [uriage_zei] => 534805.92 ) 
[5] => Array ([uriage_kingaku] => 4729711 [uriage_zei] => 378377.68 )
[6] => Array ([uriage_kingaku] => 4931684 [uriage_zei] => 394534.72 ) 
[7] => Array ([uriage_kingaku] => 0 [uriage_zei] => 0 ) 
[8] => Array ([uriage_kingaku] => 10220791 [uriage_zei] => 817663.28 ) 
[9] => Array ([uriage_kingaku] => 9522367 [uriage_zei] => 761789.36 ) 
[10] => Array ([uriage_kingaku] => 5693308 [uriage_zei] => 455464.64 ) 

Array (
[0] => Array ([uriage_kingaku] => 16066805 [uriage_zei] => 1285344.4 ) 
[1] => Array ([uriage_kingaku] => 10220791 [uriage_zei] => 817663.28 ) 
[2] => Array ([uriage_kingaku] => 9522367 [uriage_zei] => 761789.36 ) 
[3] => Array ([uriage_kingaku] => 6685074 [uriage_zei] => 534805.92 ) 
[4] => Array ([uriage_kingaku] => 5693308 [uriage_zei] => 455464.64 ) 
[5] => Array ([uriage_kingaku] => 5614953 [uriage_zei] => 449196.24 )
[6] => Array ([uriage_kingaku] => 4931684 [uriage_zei] => 394534.72 ) 
[7] => Array ([uriage_kingaku] => 4729711 [uriage_zei] => 378377.68 )
[8] => Array ([uriage_kingaku] => 3249195 [uriage_zei] => 259935.6 ) 
[9] => Array ([uriage_kingaku] => 0 [uriage_zei] => 0 ) 
[10] => Array [uriage_kingaku] => 0 [uriage_zei] => 0 ) 

配列データ状況が間違えていましたので修正します
$array[0]["uriage_kingaku"][16066805];
$array[1]["uriage_kingaku"][5614953];
$array[2]["uriage_kingaku"][3249195];
$array[3]["uriage_kingaku"][6685074];
$array[4]["uriage_kingaku"][4729711];
$array[5]["uriage_kingaku"][5614953];
$array[6]["uriage_kingaku"][4931684];
$array[7]["uriage_kingaku"][0];
$array[8]["uriage_kingaku"][10220791];
$array[9]["uriage_kingaku"][9522367];
$array[10]["uriage_kingaku"][5693308];

のようなデータ構造になっています。

Answer 1

$a=[
["uriage_kingaku"=> 0        ,"uriage_zei" => 0],
["uriage_kingaku"=> 16066805 ,"uriage_zei" => 1285344.4],
["uriage_kingaku"=> 5614953  ,"uriage_zei" => 449196.24],
["uriage_kingaku"=> 3249195  ,"uriage_zei" => 259935.6],
["uriage_kingaku"=> 6685074  ,"uriage_zei" => 534805.92],
["uriage_kingaku"=> 4729711  ,"uriage_zei" => 378377.68],
["uriage_kingaku"=> 4931684  ,"uriage_zei" => 394534.72],
["uriage_kingaku"=> 0        ,"uriage_zei" => 0],
["uriage_kingaku"=> 10220791 ,"uriage_zei" => 817663.28],
["uriage_kingaku"=> 9522367  ,"uriage_zei" => 761789.36],
["uriage_kingaku"=> 5693308  ,"uriage_zei" => 455464.64],
];
usort($a,function($x,$y){
  if($x["uriage_kingaku"]==$y["uriage_kingaku"]) return 0;
  return $x["uriage_kingaku"]<$y["uriage_kingaku"]?1:-1;
});
print_r($a);

Answer 2

foreach($period as $key=>$value){
 $id[$key] = $value['uriage_kingaku'];
}
array_multisort($id ,SORT_DESC,$period);

Comments

[papinianus]

そうやるなら`array_multisort(array_column($array, 'uriage_kingaku'), SORT_ASC, $array)`とも書けます。