/*
This program generates random lottery numbers for:
- 6 distinct numbers out of 37
- 1 distinct number out of 7 (power number)
It uses:
- random_int() for secure random number generation
- shuffle() to efficiently pick unique numbers
- clean functions and idiomatic PHP style
*/
/*
pickDistinctNumbers($count, $max):
Generates $count distinct random numbers from the range [1..$max].
Algorithm:
- Create an array containing all numbers 1..$max
- Shuffle the array using shuffle()
- Take the first $count numbers
This guarantees:
- all numbers are unique
- uniform randomness
- no duplicate checks needed
*/
function pickDistinctNumbers(int $count, int $max): array {
$numbers = range(1, $max); // full range
shuffle($numbers); // Fisher–Yates under the hood
return array_slice($numbers, 0, $count);
}
/*
pickPowerNumber($max):
Returns a single random number in the range [1..$max].
*/
function pickPowerNumber(int $max): int {
return random_int(1, $max);
}
// Main program
$mainCount = 6;
$mainMax = 37;
$powerMax = 7;
// Generate main numbers
$mainNumbers = pickDistinctNumbers($mainCount, $mainMax);
sort($mainNumbers); // sort for nicer output
// Generate power number
$powerNumber = pickPowerNumber($powerMax);
// Output results
echo "Main numbers (6 out of 37): " . implode(' ', $mainNumbers) . PHP_EOL;
echo "Power number (1 out of 7): $powerNumber" . PHP_EOL;
/*
run:
Main numbers (6 out of 37): 5 10 22 25 32 37
Power number (1 out of 7): 4
*/
