The following PHP source code shows that how to print random numbers within a range using a seed. It uses rand() function to return the random numbers within a predefined range. The srand() function is used to provide the seed or arbitrary int number.
The rand() is built in PHP function which is generally used to generate a random integer number with in a range of values i.e., it can generate a random integer value in the range [min, max].
This function is not very secure so it should not be used for cryptographic purposes. Your can consider using any of these functions if you need a cryptographically secure value random_int(), random_bytes(), or openssl_random_pseudo_bytes() instead.
1 2 3 4 5 6 7 8 9 | <?php srand(time()); //get ten random numbers from -100 to 100 for($index = 0; $index < 10; $index++) { print(rand(-100, 100) . "<br>\n"); } ?> |
Note: The output of the code changes every time it is run because we provide a different seed every time by using srand(time()) function.
Output:
1 2 3 4 5 6 7 8 9 10 | -49 50 60 32 59 -7 -94 -31 97 -41 |
