i have few field of data such as product , amount and barcode.The system just show 1 row of data insert form that contain the 3 field.when i completed insert the first row, then second row of textbox will auto generate, i can do it by microsoft access, can i do so for php ?

<?php $i=0; ?>
    <form method="post" action="">
        <input type="text" name="<?php echo $i; ?>" />
    </form>


<?php 
    if(isset($_POST[$i])){
    $i++;
?>
    <form method="post" action="">
        <input type="text" name="<?php echo $i; ?>" />
    </form>
<?php }?>

it work for the first and second textbox, but how can i continue to create more textbox accordingly?