How can checkbox values be processed in PHP when submitted from a form?

When checkboxes are submitted from a form in PHP, their values can be processed by checking if they are set using the isset() function. If a checkbox is checked, its value will be sent in the form data. To handle multiple checkboxes with the same name, an array can be used to store the values of the checked checkboxes. 

// Process checkbox values submitted from a form
if(isset($_POST['checkbox_name'])) {
    $checkbox_values = $_POST['checkbox_name'];

    // If multiple checkboxes with the same name are checked
    foreach($checkbox_values as $value) {
        // Process each checked checkbox value
        echo $value;
    }
}

Keywords

PHP form processing checkbox values $_POST isset

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