Generate array of random unique numbers in PHP?

For random unique numbers array, use range() along with shuffle().

Example

The PHP code is as follows

Live Demo

<!DOCTYPE html>
<html>
<body>
<?php
$limit_random_array_values = range(10, 20); shuffle($limit_random_array_values);
$all_five_random_array_value = array_slice($limit_random_array_values ,0,5);
print_r(\$all_five_random_array_value);
?>
</body>
</html>

Output

This will produce the following output

Array ( [0] => 11 [1] => 14 [2] => 15 [3] => 12 [4] => 18 )