Wordpress/WPForms: How to Block URLs Inside the Form Fields

functions.php

/*
 * Block URLs from inside form on Single Line Text and Paragraph Text form fields
 *
 * @link https://wpforms.com/developers/how-to-block-urls-inside-the-form-fields/
*/
  
function wpf_dev_check_for_urls( $field_id, $field_submit, $form_data ) {
 
    if( strpos($field_submit, 'http') !== false || strpos($field_submit, 'www.') !== false ) {
        wpforms()->process->errors[ $form_data[ 'id' ] ][ $field_id ] = esc_html__( 'No URLs allowed.', 'wpforms' );
        return;
    } 
     
}
   
add_action( 'wpforms_process_validate_textarea', 'wpf_dev_check_for_urls', 10, 3 );
add_action( 'wpforms_process_validate_text', 'wpf_dev_check_for_urls', 10, 3 );