PHP按键名排序数组

Question

I have an array like this

//$src
Array(
[dim_55] => path/to/image.jpg
[dim_180] => path/to/image.jpg
[dim_190] => path/to/image.jpg
[dim_475] => path/to/image.jpg
[dim_635] => path/to/image.jpg
[dim_540] => path/to/image.jpg
[dim_1130] => path/to/image.jpg
[dim_1900] => path/to/image.jpg
)

( path/to/image.jpg is a generic path )

I would like to order this by key in an order like

dim_1900
dim_1130
dim_635
dim_540
dim_475
..

To achieve this solution I did something like:

$sortSrc = array();
foreach($src as $key => $value){
  $newkey = explode("dim_", $key);
  $sortSrc[$newkey[1]] = $value; 
}

krsort($sortSrc);

It works but maybe is not so effective. Is there a way in which I can achieve this with native PHP functions?

Answer 1

You need to use krsort($src, SORT_NATURAL);

See: http://php.net/manual/en/function.sort.php for sort flags documentation