How can PHP be used to determine which radio button was selected in a form submission?

To determine which radio button was selected in a form submission using PHP, you can access the value of the selected radio button in the $_POST superglobal array. Each radio button should have a unique name attribute, and the selected radio button's value will be stored in the $_POST array under that name. 

if(isset($_POST['radio_button_name'])){
    $selected_radio = $_POST['radio_button_name'];
    echo "Selected radio button: " . $selected_radio;
}

Keywords

PHP radio button form submission $_POST isset

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