How can I sort an array without reset the index?

Question

This is my array :

10908  :int 110
10280  :int 175
10278  :int 585
10277  :int 3015
10275  :int 2835

The index is the ID of the element. I want to know which ID has the bigest value.

When I sort it I lose the value of the Index. How can I sort the index in function of the value?

php.net/manual/en/function.asort.php

Moe
– Moe

2017-01-20 14:02:56 +00:00
Commented Jan 20, 2017 at 14:02 — Moe
– Moe, Commented Jan 20, 2017 at 14:02
you can use asort

Abhishek
– Abhishek

2017-01-20 14:03:38 +00:00
Commented Jan 20, 2017 at 14:03 — Abhishek
– Abhishek, Commented Jan 20, 2017 at 14:03

Community · Accepted Answer · 2017-05-23 12:33:57Z

4

If you really need to sort it and want to keep the association between keys and values, use asort($array).

You can find a solution for your specific problem here: Return index of highest value in an array

edited May 23, 2017 at 12:33

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answered Jan 20, 2017 at 14:02

antesoles

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jeroen · Accepted Answer · 2017-01-20 14:02:55Z

1

You need asort(), that sorts your array while keeping the keys.

And to get the highest key value, you can use max(array_keys($your_array)); regardless of the sort order of the array.

answered Jan 20, 2017 at 14:02

jeroen

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Comments

lazyCoder · Accepted Answer · 2017-01-20 14:21:13Z

1

@CE_ use asort() like below example:

    <?php
     $arr = array(10908 => 110, 10280 => 175, 10278 => 585, 10277 => 3015, 10275 => 2835);
    print_r($arr); //before sort
    asort($arr);
    print_r($arr); // after sort

This asort() function sort array along with the index

edited Jan 20, 2017 at 14:21

answered Jan 20, 2017 at 14:03

lazyCoder

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3 Comments

arkascha Over a year ago

I'd like to suggest that you remove the closing ?> php tag... It is generally considered bad style since it causes endless issues for nothing... It is typically not required, except if you want to terminate php interpretation in the middle of some file.

lazyCoder Over a year ago

i know but i follow the syntax rules, i know ?> not required but its my good habbit

arkascha Over a year ago

Actually it is not a good habit, since it causes issues without offering any benefit. And the "syntax rules" do not require you to close a php block in general...

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