Array sort by value number chars

Question

Hi thinking i have an array like this :

[0]=>[
   [0]=>'Hey',
   [1]=>'H',
   [2]=>'He',



]

now i would like to sort by number chars and return somenthing like this:

[0]=>[
   [0]=>'H',
   [1]=>'He',
   [2]=>'Hey',
]

maybe the answer is array_sort() but i'm not able to do that. also i would not like to loop the array to check the number chars of values, but if it's the only way i need to use anyway :P

BTW

how to return this same array ordered by ['name'] key number of chars ASC (h - he -hey -heyh - heyhey )?

array(5) {
  [0]=>
  array(2) {
    ["id"]=>
    object(MongoId)#26 (1) {
      ["$id"]=>
      string(24) "4e72858ccaa47ca608030000"
    }
    ["name"]=>
    string(4) "h"
  }
  [1]=>
  array(2) {
    ["id"]=>
    object(MongoId)#29 (1) {
      ["$id"]=>
      string(24) "4e72858ccaa47ca608040000"
    }
    ["name"]=>
    string(10) "hey"
  }
  [2]=>
  array(2) {
    ["id"]=>
    object(MongoId)#31 (1) {
      ["$id"]=>
      string(24) "4e72858ccaa47ca608400000"
    }
    ["name"]=>
    string(1) "heyhey"
  }
  [3]=>
  array(2) {
    ["id"]=>
    object(MongoId)#33 (1) {
      ["$id"]=>
      string(24) "4e72858ccaa47ca6081a0000"
    }
    ["name"]=>
    string(6) "he"
  }
  [4]=>
  array(2) {
    ["id"]=>
    object(MongoId)#35 (1) {
      ["$id"]=>
      string(24) "4e72858ccaa47ca6083d0000"
    }
    ["name"]=>
    string(3) "heyh"
  }
}

What's the actual question? Do you have difficulties because it's a multidimensional array? — ChrisR
– ChrisR, Commented Sep 16, 2011 at 13:52

mfonda · Accepted Answer · 2011-09-16 16:08:44Z

2

If you want to sort by the number of characters, usort is the way to go. It lets you define your own sorting function.

function lengthsort($s1, $s2) {
    if (strlen($s1['name']) < strlen($s2['name'])) {
        return -1;
    } elseif (strlen($s1['name']) > strlen($s2['name'])) {
        return 1;
    } else {
        return 0;
    }
}
usort($array, 'lengthsort');

edited Sep 16, 2011 at 16:08

answered Sep 16, 2011 at 13:53

mfonda

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2 Comments

Filippo oretti Over a year ago

i edited my question cause i need a more deep script i think. thx ;)

mfonda Over a year ago

@Ipsuk: the function used by usort will accept elements of your array, so in that function, you can use them as you would an element of your original array. I've updated my example to demonstrate this

Alex Turpin · Accepted Answer · 2011-09-16 13:55:45Z

2

PHP's usort allows you to specify a custom sorting function:

<?php
    $arr = array(array('Hey', 'H', 'He'));
    print_r($arr);

    usort($arr[0], function($a, $b) {
        return strlen($a) - strlen($b);
    });

    print_r($arr);
?>

DEMO

answered Sep 16, 2011 at 13:55

Alex Turpin

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1 Comment

Filippo oretti Over a year ago

i edited my question cause i need a more deep script i think. thx ;)

Punit · Accepted Answer · 2011-09-16 14:06:41Z

2

their is no function like array_sort() in php you need to use only sort() function which sorts the array by the values and keep the key information as it is.

$arr = array('0'=>array('0'=>'Hey','1'=>'H','2'=>'He'));

foreach($arr as $k=>$v):
$arr1 = $v;
sort($arr1);
print_r($arr1);
endforeach;

?>

answered Sep 16, 2011 at 14:06

Punit

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1 Comment

Filippo oretti Over a year ago

i edited my question cause i need a more deep script i think. thx ;)

Community · Accepted Answer · 2023-11-17 19:32:19Z

1

take a look at usort() wich lets you define an own function for sorting:

$myarray = array('Hey','H','He');

usort($myarray,function($a, $b){
  if (strlen($a) == strlen($b)) {
    return 0;
  }
  return (strlen($a) < strlen($b)) ? -1 : 1;
});

var_dump($myarray); // array('H','He','Hey')

note that i'm using an inline-function here, wich is possible with php 5.3+ - in lower versions of php you'll have to define a traditional function and pass the name of that function to usort()

edited Nov 17, 2023 at 19:32

CommunityBot

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answered Sep 16, 2011 at 13:53

oezi

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1 Comment

Filippo oretti Over a year ago

i edited my question cause i need a more deep script i think. thx ;)

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