What are some common mistakes to avoid when working with radio buttons in PHP?

One common mistake when working with radio buttons in PHP is not properly handling the form submission. Make sure to check if the radio button is set before trying to access its value. Another mistake is not setting a default value for the radio button, which can result in unexpected behavior if the user doesn't select an option. 

// Check if the radio button is set before accessing its value
if(isset($_POST['radio_button'])){
    $selected_option = $_POST['radio_button'];
    // Process the selected option
}

// Set a default value for the radio button
$default_option = 'default_value';

Keywords

radio buttons PHP validation form handling input handling

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