How can PHP be used to handle checkbox values and maintain their checked status based on user input in form submissions?

To handle checkbox values and maintain their checked status based on user input in form submissions, you can utilize PHP to check if a checkbox is checked and set its status accordingly. You can achieve this by using the isset() function to determine if the checkbox value is present in the form submission data. If the checkbox is checked, you can set its value to "checked" in the HTML output.

<input type="checkbox" name="checkbox_name" <?php if(isset($_POST['checkbox_name'])) echo "checked"; ?>>