- array_slice: documentation ( source)
- implode: documentation ( source)
- shuffle: documentation ( source)
<?php
$arr = [
'lorem',
'ipsum',
'dolor',
'sit',
'amet',
'consectetur',
'adipiscing',
'elit',
];
shuffle($arr);
$result = implode(
' ',
array_slice($arr, 2, 2)
);
echo $result;