What are common pitfalls when using PHP forms within a loop?

One common pitfall when using PHP forms within a loop is that each form element must have a unique name attribute to ensure that the values are correctly submitted. To solve this issue, you can append a unique identifier to the name attribute of each form element within the loop.

<?php
for ($i = 0; $i < 5; $i++) {
    echo '<form method="post">';
    echo '<input type="text" name="input_' . $i . '">';
    echo '<input type="submit" value="Submit">';
    echo '</form>';
}
?>