Cookie Factory

<?php

$batches = intval(readline());
$hasFlour = false;
$hasEggs = false;
$hasSugar = false;
for ($i = 1; $i <= $batches; $i++) {
    while ($i<=$batches) {
        $ingredient = readline();
        if ($ingredient === "Bake!") {
            if ($hasFlour && $hasEggs && $hasSugar) {
                $hasEggs = false;
                $hasFlour = false;
                $hasSugar = false;
                echo "Baking batch number $i..." . PHP_EOL;
                break;
            }else {
                echo "The batter should contain flour, eggs and sugar!".PHP_EOL;
            }

        } else {
            if ($ingredient === "flour") {
                $hasFlour = true;
            } else if ($ingredient === "eggs") {
                $hasEggs = true;
            } else if ($ingredient === "sugar") {
                $hasSugar = true;
            }
        }
    }
}