php rand int

1function generateRandomString($length = 25) {
2    $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
3    $charactersLength = strlen($characters);
4    $randomString = '';
5    for ($i = 0; $i < $length; $i++) {
6        $randomString .= $characters[rand(0, $charactersLength - 1)];
7    }
8    return $randomString;
9}
10//usage 
11$myRandomString = generateRandomString(5);

1you can use rand() function for that in php.
2Example:
3Generate random numbers between 1 to 50
4<?php
5  echo rand(1,50);
6?>

1$digits = 3;
2echo rand(pow(10, $digits-1), pow(10, $digits)-1);
3

1echo random_int(0,50);

1<?php
2  echo rand(1,50);
3?>

1random_int ( int $min , int $max );