PHP VERSION: 8.2.18

spaceship_operator_usort_example.php


<?php
$array = [  'oranges',
            'apples',
            'bananas',
            'grapes'];
echo 'Before: ' . PHP_EOL;
print_r($array);
usort($array, function ($left, $right) { return $left <=> $right; });
echo 'After: ' . PHP_EOL;
print_r($array);

Output

Before: 
Array
(
    [0] => oranges
    [1] => apples
    [2] => bananas
    [3] => grapes
)
After: 
Array
(
    [0] => apples
    [1] => bananas
    [2] => grapes
    [3] => oranges
)

SOURCE CODE