Arrays are a great way to store / work with data. In PHP, arrays are one of the
most powerful data types of available. From time to time, you need to sort an
array in reverse order. Of course, PHP has you covered:
$array = [
1 => 'one',
2 => 'two',
3 => 'three',
4 => 'four',
5 => 'five',
rsort($array
print_r($array
Great, the array values are now sorted in reverse order. But wait?! The keys for
those values have been reset! What are we to do? Again, PHP has you covered:
$array = [
1 => 'one',
2 => 'two',
3 => 'three',
4 => 'four',
5 => 'five',
arsort($array
print_r($array
BOOM! Now the array values are sorted in reverse order and the keys have been
retained. This can be very important when you are utilizing both the array’s
values as well as the keys for separate things.
The trick is making sure you sort your data based on how you plan to use it.
I’ve personally been burned by incorrectly sorting data, but it’s always been
simple to troubleshoot and resolve.
