What are the best practices for handling radiobutton values in PHP forms?

When handling radiobutton values in PHP forms, it is important to ensure that only one option is selected at a time. This can be achieved by giving each radiobutton in the group a unique name attribute and using isset() function to check which radiobutton is selected. 

// HTML form
<form method="post">
    <input type="radio" name="option" value="option1"> Option 1
    <input type="radio" name="option" value="option2"> Option 2
    <input type="radio" name="option" value="option3"> Option 3
    <input type="submit" name="submit" value="Submit">
</form>

// PHP code to handle radiobutton values
if(isset($_POST['submit'])){
    if(isset($_POST['option'])){
        $selected_option = $_POST['option'];
        echo "Selected option: " . $selected_option;
    } else {
        echo "Please select an option";
    }
}

Keywords

radiobutton values PHP forms handling best practices

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