PHP5, how to access an array without a variable?

Question

PHP

Fragment from ORM:

->order('a.' . ['price' => 'price', 'name' => 'name', 'date' => 'id'][$options['sort']])->$options['sort_mode']()

Question:
Why does the construction work on one server, but on the second server the error handler gives the following:
Fatality: syntax error, unexpected '['
1. server: win, apache2, php
2. server: nginx, php-fpm
The php versions are almost the same.. Or ,
perhaps, such a seemingly elementary operation is wrong in itself?

Answer 1

It's about PHP versions, read the description of releases.

Answer 2

The php versions are almost the same...

Short array notation

['price' => 'price', 'name' => 'name', 'date' => 'id']

appeared in version 5.4, if version < 5.4 use

array('price' => 'price', 'name' => 'name', 'date' => 'id')