- implode: documentation ( source)
- error_reporting: documentation ( source)
<?php
error_reporting(-1);
$total = 12;
$skip = 4;
$numberLeft = 1;
for ($i = 1; $i <= $total; $i++){
$positions[$i] = $i;
}
for ($i = $total; $i >= $skip; $i--){
if ($total - $numberLeft < $skip - 1){
$numberLeft = $skip - ($total - $numberLeft) - 1;
} else {
$numberLeft = $numberLeft + $skip - 1;
}
for($j = $numberLeft; $j < $total; $j++){
$positions[$j] = $positions[$j+1];
}
unset($positions[$total]);
$total--;
}
echo "Выигрышные места: ".implode(", ", $positions);