Skip to content

Instantly share code, notes, and snippets.

What would you like to do?
gravity form minimum age validation
add_filter( 'gform_validation', 'profile_validation' );
function profile_validation( $validation_result ) {
$form = $validation_result['form'];
//date of birth
$dob = rgpost('input_4'); //set to date field. also set below
// this the minimum age requirement we are validating
$minimum_age = 18;
//get difference in date and todays date
$from = new DateTime($dob);
$to = new DateTime('today');
$age = $from->diff($to)->y;
// if age is smaller thna minimum age
if( $age < $minimum_age ){
// set the form validation to false if age is less than minimum age
$validation_result['is_valid'] = false;
// find field with ID of 5 and mark it as failed validation
foreach($form['fields'] as &$field){
//set to date field
if($field['id'] == '4'){
$field['failed_validation'] = true;
$field['validation_message'] = "Sorry, you must be at least $minimum_age years of age to join. You're $age years old.";
$validation_result['form'] = $form;
return $validation_result;
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.