Bomb Number

<?php

$numbers = array_map('intval', explode(' ', readline()));
$bombNumbers = array_map('intval', explode(' ', readline()));

for ($i = 0; $i < count($numbers); $i++) {
    if ($numbers[$i] === $bombNumbers[0]) {
        if ($bombNumbers[1] + $i >= count($numbers)) {
            array_splice($numbers, $i, count($numbers) - $i);
            array_splice($numbers, $i - $bombNumbers[1], $bombNumbers[1]);
            break;
        }
        if ($i - $bombNumbers[1] < 0) {
            if ($i === 0) {
                array_splice($numbers, 0, 1 + $bombNumbers[1]);
                $i = -1;
            } else {
                array_splice($numbers, 0, $i);
                array_splice($numbers, $i + 1, $bombNumbers[1] - 1);
                $i -= $bombNumbers[1] + 1;
            }
        } else {
            array_splice($numbers, $i - $bombNumbers[1], ($bombNumbers[1] * 2) + 1);
            $i -= $bombNumbers[1] + 1;
        }
    }
}

echo array_sum($numbers);