What are common pitfalls when handling radio buttons in PHP forms?

Common pitfalls when handling radio buttons in PHP forms include not properly setting default values, not validating user input, and not correctly processing the selected radio button value. To solve these issues, ensure that the radio buttons have default values set, validate the user input to prevent malicious data, and correctly process the selected radio button value in your PHP form handling code. 

// Example PHP code snippet to handle radio buttons in a form

// Set default value for radio buttons
$selectedOption = isset($_POST['radio_option']) ? $_POST['radio_option'] : '';

// Validate user input
if (!in_array($selectedOption, ['option1', 'option2', 'option3'])) {
    // Handle validation error
}

// Process selected radio button value
switch ($selectedOption) {
    case 'option1':
        // Handle option 1 selection
        break;
    case 'option2':
        // Handle option 2 selection
        break;
    case 'option3':
        // Handle option 3 selection
        break;
}

Keywords

radio buttons PHP forms handling validation errors

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