Php sort array by array key

- Php sort array by another array keys
- Php sort array of array by key value
- Php sort array by key descending
- Php sort array by key alphabetically
- Php sort array by key ascending
- Php sort array by key desc
- Php sort array by key multidimensional
- Php sort array by key value descending
- Php sort array by key date
- Php sort array by key length
- Php sort array by key name
- Php sort array by key case insensitive
- Php sort array by key numeric
- Php sort array by multiple keys
- Php sort array by object key