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I have the following array:

$myarray = Array (
[1] => stdClass Object ( 
    [ID] => 1 
    [current] => 
)

[2] => stdClass Object ( 
    [ID] => 2 
    [current] => 1 
)

[3] => stdClass Object ( 
    [ID] => 3 
    [current] =>
)

[4] => stdClass Object ( 
    [ID] => 4 
    [current] =>
)

[5] => stdClass Object ( 
    [ID] => 5 
    [current] =>
)
)

And I need to sort it, having the value current as the first, and the afterwards all the items that were originally after that current one, and the items that were originally before would be the last ones on the result array.

So the new array would look like this:

Array (
[1] => stdClass Object ( 
    [ID] => 2 
    [current] => 1 
)

[2] => stdClass Object ( 
    [ID] => 3 
    [current] =>
)

[3] => stdClass Object ( 
    [ID] => 4 
    [current] =>
)

[4] => stdClass Object ( 
    [ID] => 5 
    [current] =>
)

[5] => stdClass Object ( 
    [ID] => 1 
    [current] => 
)
)

It's very important that

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3 Answers

up vote 0 down vote accepted

If you want to keep the same order of element do not sort your array but rotate it until the current element is first, e.g.

while($myarray[0]['current']<>1) {
  array_push($myarray, array_shift($myarray));
}
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Rotate instead of sorting, never would find it heehe Thanks a lot... Spot on! – Eduardo Apr 23 '12 at 16:16
up vote 3 down vote

The usort() function may be of interest to you.

usort($input,function($a,$b) {return $a['current']-$b['current'];});
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With that solution, the first array item would be my original last one. I need to keep the original order. Look at the IDs of my desired result – Eduardo Apr 23 '12 at 16:11
Hmm... in that case you should probably use a foreach to find the current entry, then array_splice and array_unshift will help you get it to the front. If that's too complicated, consider reworking how the data is fetched in the first place. – Kolink Apr 23 '12 at 16:13
up vote 0 down vote

You can deal with the usort() function.

You basically set your custom order function and you pass it to usort() as the second parameter (the first one is the array to sort).

Inside the callback function you can define the way your array will be sorted. For example

usort($array_to_sort, function($a,$b) {
    return $a['current']-$b['current'];
});
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