PHP sort array with special characters

Question

I know this was asked many times, but still I can't find bullet proof solution.

Here is my array which needs to be sorted alphabetically.

setlocale(LC_ALL, 'sl_SI.utf8');

$a = [
   'č' => [...],  
   'a' => [...],
   'š' => [...], 
   'u' => [...] 
]

How can I sort it by keys?

[It gives output this](https://eval.in/990861), What your desire output ? — Niklesh Raut, Apr 19 '18 at 07:38
I want it sorted by keys [a => [], č => [], š => [], u => []] — Tim, Apr 19 '18 at 07:38

Alive to die - Anant · Accepted Answer · 2018-04-19T07:52:26.763

5

Taken reference from this example:-Sort an array with special characters in PHP

Explanation:-

Get array keys using array_keys() method
Sort keys based on iconv() AND strcmp() functions
Iterated over the sorted key array and get their corresponding value from initial array.Save this key value pair to your resultant array

Do like below:-

<?php

setlocale(LC_ALL, 'sl_SI.utf8');

$a = [
   'č' => [12],  
   'a' => [23],
   'š' => [45], 
   'u' => [56] 
];


$index_array = array_keys($a);

function compareASCII($a, $b) {
    $at = iconv('UTF-8', 'ASCII//TRANSLIT', $a);
    $bt = iconv('UTF-8', 'ASCII//TRANSLIT', $b);
    return strcmp($at, $bt);
}

uasort($index_array, 'compareASCII');

$final_array = [];
foreach($index_array as $index_arr){

$final_array[$index_arr] = $a[$index_arr];
}

print_r($final_array);

Output:- https://eval.in/990872

Reference:-

iconv()

strcmp()

uasort

edited Apr 19 '18 at 07:52

answered Apr 19 '18 at 07:41

Alive to die - Anant

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3

What about [`sort($index_array, SORT_LOCALE_STRING);`](http://php.net/manual/en/function.sort.php)? Why is a comparison using `iconv()` and `strcmp()` better? :-) – Philipp Maurer Apr 19 '18 at 07:43
1

This works! Also now I tried with ksort($array, SORT_LOCALE_STRING), which works too, but only on linux environment. – Tim Apr 19 '18 at 07:45
@PhilippMaurer `sort($index_array, SORT_LOCALE_STRING);?` not worked:-https://eval.in/990875 – Alive to die - Anant Apr 19 '18 at 07:46
@Tim glad to help you :):) – Alive to die - Anant Apr 19 '18 at 07:49

score 4 · Answer 2 · answered Nov 12 '19 at 14:25

Use strcoll().

setlocale(LC_ALL, 'sl_SI.utf8');
// setlocale(LC_ALL,"cs_CZ.UTF-8"); //for Czech characters etc.
uksort($a, 'strcoll');

You can use usort for sorting multidimensional arrays by value this way:

 setlocale(LC_ALL, 'sl_SI.utf8');
 // setlocale(LC_ALL,"cs_CZ.UTF-8"); //for Czech characters etc.
 usort($posts, function($a, $b) {
    return strcoll($a["post_title"], $b["post_title"]);
 });

or for objects:

 setlocale(LC_ALL, 'sl_SI.utf8');
 // setlocale(LC_ALL,"cs_CZ.UTF-8"); //for Czech characters etc.
 usort($posts, function($a, $b) {
    return strcoll($a->post_title, $b->post_title);
 });

PHP sort array with special characters

2 Answers2