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# Description: Random Generator - Lottery Numbers Here the algorithm of the generator "Lottery Numbers" is described. With this random generator you can generate your lottery numbers. With a little luck you might already be the next millionaire.

## What is randomness?

Randomness is an event whose state cannot be clearly predicted causally. This means that the result of a random generator may not be predictable or computable. This, however, contradicts the laws of each computer. In other words, a computer can not produce absolutely random numbers without additional peripherals. In this case we call it pseudo-random numbers. In general, you can philosophize about at which point you can actually speak about randomness in practise.

## How are the lottery numbers generated?

Theoretically, several different methods are used in this generator to generate pseudo-random values. For the actual lottery numbers, a PHP function for cryptographically secure pseudo random numbers is used.

### Random generators for binary string

How these random generators work, is explained here in detail.

### Random generator for lottery numbers

The previous random number generators produce relatively good random numbers, which, however, can further be improved. The lottery numbers are therefore always generated on server-side with the PHP function random_int(), which generates cryptographically secure pseudo-random numbers:

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```// Intitialization
for (\$i = 1; \$i <= \$Number; \$i++)
{
\$numbers[] = \$i;
}

// Select all lottery numbers
for (\$i = 1; \$i <= \$Subset; \$i++)
{
\$index = random_int(0, count(\$numbers) - 1);
\$lottery_numbers[] = \$numbers[\$index];
unset(\$numbers[\$index]);           // Delete entry
\$numbers = array_values(\$numbers); // Reset indexes
}```