php multi-dimensional array sorting with case insensitive

Question

I have an array as below..

Array
(
    [0] => Array
        (
            [0] => Array
                (
                    [name] => Henry
                )
        )
    [1] => Array
        (
            [0] => Array
                (
                    [name] => jack
                )
        )
    [2] => Array
        (
            [0] => Array
                (
                    [name] => Albert
                )
        )
    [3] => Array
        (
            [0] => Array
                (
                    [name] => bunny
                )
        )

I need to sort this array by name in asc & desc order of case insensitive. Please help me..

Cjmarkham · Accepted Answer · 2013-08-19 12:41:25Z

2

I wrote a php function a few years ago which does such a thing.

function subval_sort($a, $subkey, $reverse = false)
{
    if (!$a)
    {
        return array();
    }

    $b = array();

    foreach ($a as $k => $v)
    {
        $b[$k] = strtolower($v[$subkey]);
    }

    if ($reverse)
    {
        arsort($b);
    }
    else
    {
        asort($b);  
    }

    $c = array();

    foreach ($b as $key => $val)
    {
        $c[] = $a[$key];
    }

    return $c;
}

Use it like subval_sort($array, 'name')

answered Aug 19, 2013 at 12:41

Cjmarkham

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liyakat · Accepted Answer · 2013-08-19 12:41:49Z

0

sorting function :

Use my custom function to achieve your solution it is working

    function multisort (&$array, $key) {
$valsort=array();
$ret=array();
reset($array);
foreach ($array as $ii => $va) {
    $valsort[$ii]=$va[$key];
}
asort($valsort);
foreach ($valsort as $ii => $va) {
    $ret[$ii]=$array[$ii];
}
$array=$ret;
}

multisort($multiarr,"order");

Hope this will sure help you.

answered Aug 19, 2013 at 12:41

liyakat

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Comments

Nils · Accepted Answer · 2013-08-19 12:44:05Z

$array = array(
  array('Henry'),
  array('Michael'),
  array('Steve'),
  array('Daniel'),
  array('Albert'),
);


// Comparison function
function cmp($a, $b) {
    if ($a[0] == $b[0]) {
        return 0;
    }
    return ($a[0] < $b[0]) ? -1 : 1;
}

// Array to be sorted
print_r($array);

// Sort and print the resulting array
uasort($array, 'cmp');
print_r($array);

Output:

Array
(
    [0] => Array
        (
            [0] => Henry
        )

    [1] => Array
        (
            [0] => Michael
        )

    [2] => Array
        (
            [0] => Steve
        )

    [3] => Array
        (
            [0] => Daniel
        )

    [4] => Array
        (
            [0] => Albert
        )

)
Array
(
    [4] => Array
        (
            [0] => Albert
        )

    [3] => Array
        (
            [0] => Daniel
        )

    [0] => Array
        (
            [0] => Henry
        )

    [1] => Array
        (
            [0] => Michael
        )

    [2] => Array
        (
            [0] => Steve
        )

)

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