What are the potential pitfalls of relying on PHP alone to validate form submissions with checkboxes?

Relying on PHP alone to validate form submissions with checkboxes may lead to unchecked checkboxes not being detected, as PHP does not submit unchecked checkboxes. To solve this issue, you can use JavaScript to ensure that at least one checkbox is checked before the form is submitted. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    if (!isset($_POST['checkbox_name'])) {
        $error = "Please select at least one option.";
    } else {
        // Process form submission
    }
}
?>

Keywords

PHP form submissions checkboxes validation errors

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