Question

So I currently have this:

array(0=>'foo', 1=>'bar', 3=>'baz', 4=>'boo', 5=>'wahoo');

What I want is this:

array(0=>'foo', 3=>'baz', 1=>'bar', 5=>'wahoo', 4=>'boo');

This is a simplified example, my actual array is much larger and more complex so it can’t easily be broken into smaller pieces and re-assembled.

I’ve been using uksort to attempt this, which I think is the best way forward but can’t seem to get the results I want.

Edit:

I think my simplified example is actually confusing the issue. Here is my actual array and what I want to end up with.

Array
(
    [1820] => Safety
    [1821] => Security
    [1822] => Digital Life
    [1893] => Privacy and Digital Footprints
    [1823] => Connected Culture
    [1824] => Respecting Creative Work
    [1825] => Searching
    [1826] => Research and Evaluation
    [1836] => Self-Expression and Identity
)

Array
(
    [1820] => Safety
    [1821] => Security
    [1822] => Digital Life
    [1893] => Privacy and Digital Footprints
    [1823] => Connected Culture
    [1836] => Self-Expression and Identity
    [1824] => Respecting Creative Work
    [1825] => Searching
    [1826] => Research and Evaluation
)

So I almost have a numeric sort with two items pulled out of sequence.

Answer 1

New answer based on discussion.

Do use uksort()

Do a switch in the compare function for the ones that match and change them.

Example that works for your example above.

function updateKey($key)
{
   switch($key)
   {
     case 1893:
       return 1822.5;

     case 1836:
       return 1823.5;

     default:
       return $key;
   }
}

function cmp($a, $b) 
{
    $a = updateKey($a);
    $b = updateKey($b);

    // you must do the compare this way for floats (instead of just subtracting) because php implemented the compare callback poorly
    if ($a == $b) 
    {
        return 0;
    }

    return ($a < $b) ? -1 : 1;
}

uksort($array, 'cmp');