Array sort by value number chars

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) {
      ["$id"]=>
      string(24) "4e72858ccaa47ca608030000"
    }
    ["name"]=>
    string(4) "h"
  }
  [1]=>
  array(2) {
    ["id"]=>
  开发者_Go百科  object(MongoId)#29 (1) {
      ["$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"
  }
}

---

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');

---

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

---

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;

?>

---

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()