Skip to content

Instantly share code, notes, and snippets.

@KEINOS

KEINOS/array_sort_longkey.php

Last active February 17, 2018 06:23
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save KEINOS/260bdff4f4beb2d5b607bd1045abaff1 to your computer and use it in GitHub Desktop.
Save KEINOS/260bdff4f4beb2d5b607bd1045abaff1 to your computer and use it in GitHub Desktop.
Download ZIP
PHP の連想配列で最大長の添字（最も長いキー名）順にソートさせる
Raw
array_sort_longkey.php
<?php
// Ref: https://teratail.com/questions/6342
// See work online: https://paiza.io/projects/UKMXJtPKiT4ztJZuaFFl7g
// 関数化した方法
function array_sort_longkey($array)
{
uksort($array, function ($a, $b) {
return (mb_strlen($b) > mb_strlen($a));
});
return $array;
}
// サンプルデータ
$array = [
"いいいいい" => 'iiiii',
"イヌ" => 'dog',
"ネコ" => 'cat',
"あああ" => 'aaa',
"ああああ" => 'aaaa'
];
// ソート実行
var_dump( array_sort_longkey($array));
// 結果
/*
array(5) {
["いいいいい"]=>
string(5) "iiiii"
["ああああ"]=>
string(4) "aaaa"
["あああ"]=>
string(3) "aaa"
["イヌ"]=>
string(3) "dog"
["ネコ"]=>
string(3) "cat"
}
*/
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment