Php remove last value from array

- Php remove value from array
- Php remove value from array if exists
- Php remove value from array by key
- Php remove specific value from array
- Php remove empty value from array
- Php remove null value from array
- Php remove first value from array
- Php remove one value from array
- Php remove value from array and reindex
- Php remove certain value from array
- Php remove duplicate value from array