What best practices should be followed when handling radio button values in PHP forms to ensure consistency and functionality?

When handling radio button 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 radio button in a group the same name attribute and different values. Additionally, using isset() or empty() functions to check if the value is set before processing it can help ensure consistency and functionality. 

<form action="process_form.php" method="post">
  <input type="radio" name="gender" value="male"> Male<br>
  <input type="radio" name="gender" value="female"> Female<br>
  <input type="radio" name="gender" value="other"> Other<br>
  <input type="submit" value="Submit">
</form>

<?php
if(isset($_POST['gender'])){
  $selected_gender = $_POST['gender'];
  // Process the selected gender value
}
?>

Keywords

radio buttons form handling PHP validation data consistency

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