Php array remove by key

- Php array remove duplicates by key
- Php array remove keys keep values
- Php array remove key and reindex
- Php array remove key value pair
- Php array remove key multidimensional
- Php array remove key recursive
- Php array remove key if exists
- Php remove array element by key name
- Php remove array element by key value
- Php remove array elements by key
- Php remove array key if value is empty
- Php array remove index key
- Php array remove all keys except
- Php array remove specific key
- Php array remove multiple keys