How can you ensure that unchecked checkboxes are still processed in PHP forms?

When a checkbox is left unchecked in a form, it does not send any value to the server when the form is submitted. To ensure that unchecked checkboxes are still processed in PHP forms, you can include hidden input fields with the same name as the checkboxes. This way, even if a checkbox is unchecked, the hidden input field will still send a value to the server. 

<form method="post" action="process_form.php">
    <input type="checkbox" name="checkbox1" value="1">
    <input type="hidden" name="checkbox1" value="0">
    
    <input type="submit" value="Submit">
</form>

Keywords

PHP forms checkboxes processing unchecked

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