WooCommerce : Custom validation on checkout page for First and Last names to Contain Only Letters.

Code

Customer having name “1234” has placed order on your Woocommerce site?

We are in 21st century, but it’s still not possible that a human being having a name like 1234 or any other number.
Woocommerce allow to fill user information on it’s checkout page. It also allow create user account at time of checkout. on checkout page their are many fields provided by woocommerce which may have input type number or text.

Woocommerce allow user to fill number instead of text in first name and last name field which not look so good.
because name having number in it look like fake details. Which may look like unsafe on site too.

It not look good because name can’t contain number so for validating it just use 'woocommerce_after_checkout_validation ' hook to add custom validation rules and error messages for this.

Example :

function ValidateFirstnameLastname( $fields, $errors ){
  if ( preg_match( '/\\d/', $fields['billing_first_name'] ) || preg_match( '/\\d/', $fields['billing_last_name'] )  ){
    $errors->add('validation','Your First name or Last name contains a number. Really?' );
  }
}
add_action('woocommerce_after_checkout_validation','ValidateFirstnameLastname',99,2);
null

Enjoy

Shiv kumawat

Executive Director & CEO

"Shiv kumawat is the Executive Director and CEO of Eoxys It Solution LLP and the strategic mind behind the company"s growth. His expertise in operational efficiency and team leadership empowers his colleagues to excel and innovate.”

Latest Posts

Smarter Learning for a Smarter Era: How AI Is Transforming Learning Management Systems (LMS) in 2025

  Smarter Learning for a Smarter Era: How AI IsTransforming Learning Management Systems(LMS) in 2025 From Static Systems to Intelligent…

Shafeeq Khan
October 3, 2025

AI Overviews and Google Search: What Businesses Need to Know in 2025

  AI Overviews and Google Search: What Businesses Need to Know in 2025 Entering the Age of AI Overviews The…

Shafeeq Khan
September 23, 2025

Ride Smarter: How AI Is Transforming Cab Apps in the USA for 2025

  Ride Smarter: How AI Is Transforming Cab Apps in the USA for 2025 The New Pulse of Urban Travel…

Shafeeq Khan
September 20, 2025
,

Leave a Reply

Your email address will not be published. Required fields are marked *