In php, we can use the random function
1. how to generate unique random number in php
$numbers = range (1, 20); shuffle ($numbers);
Or use the function
function randomNumner ($ min, $ max, $ quantity) { $numbers = range ($min, $max); shuffle ($numbers); return array_slice ($numbers, 0, $quantity); }
2. How to generate 5 digit numbers?
randomNumner ($ min, $ max, 5);
3. php generate random alphanumeric
If you want to generate random alphanumeric strings from a fixed set of characters, you can use the str_shuffle ($string) function. This function returns you a random shuffled string.
$allowed_chars = '0123456789abcdefghijklmnopqrstuvwxyz'; // Output: 54esmdr0qf echo substr (str_shuffle ($permitted_chars), 0, 10);