How to make Customer Billing Phone Number Unique in WordPress

Hi,

Do I understand correctly that you want to validate the telephone field when registering? normally there is no telephone field there? how did you add this? because this can determine the method of validation.

P.s. the woocommerce_register_form hook is to add fields, woocommerce_register_post can then be used to validate.

I want to validate the Customer billing phone number ( i want to make phone numbers unique ). Because customers going to login to the site using phone numbers. so I want to validate customers’ billing phone number.

I tried below code but it is giving WordPress error.

add_filter( 'update_user_meta', 'ts_unique_wc_phone_field');
function ts_unique_wc_phone_field( $errors ) {
    if ( isset( $_POST['billing_phone'] ) ) {
        $hasPhoneNumber= get_users('meta_value='.$_POST['billing_phone']);
            if ( !empty($hasPhoneNumber)) {
        $errors->add( 'billing_phone_error', __( '<strong>Error</strong>: Mobile number is already used!.', 'woocommerce' ) );
    }
  }
    return $errors;
}

I know what your intention is, my question is how you added that phone field, because the validation will depend on it

Below is the custom phone field code. This code checks if the phone number exists or not during user registration. But also I want to check the user-profile also (if the phone number is already taken then it should not update there).

///Custom Registration Field
///////////////////////////////
// 1. ADD FIELDS
 
add_action( 'woocommerce_register_form_start', 'bbloomer_add_name_woo_account_registration' );
 
function bbloomer_add_name_woo_account_registration() {
    ?>
 
    <p class="woocommerce-form-row woocommerce-form-row--wide form-row form-row-wide">
    <label for="reg_phone"><?php _e( 'Phone Number', 'woocommerce' ); ?> <span class="required">*</span></label>
    <input type="tel" class="input-text regular-text billing_phone" name="billing_phone" id="billing_phone" value="<?php if ( ! empty( $_POST['billing_phone'] ) ) esc_attr_e( $_POST['billing_phone'] ); ?>" />
    </p>
 
    <div class="clear"></div>
 
    <?php
}
 
///////////////////////////////
// 2. VALIDATE FIELDS
 
add_filter( 'woocommerce_registration_errors', 'bbloomer_validate_name_fields', 10, 3 );
 
function bbloomer_validate_name_fields( $errors, $username, $email ) {
    if ( isset( $_POST['billing_phone'] ) && empty( $_POST['billing_phone'] ) ) {
        $errors->add( 'billing_phone_error', __( '<strong>Error</strong>: Mobile Number is required!.', 'woocommerce' ) );
    }
    
    if ( isset( $_POST['billing_phone'] ) ) {
        $hasPhoneNumber= get_users('meta_value='.$_POST['billing_phone']);
            if ( !empty($hasPhoneNumber)) {
        $errors->add( 'billing_phone_error', __( '<strong>Error</strong>: Mobile number is already used!.', 'woocommerce' ) );
    }
  }
    return $errors;
}
 
///////////////////////////////
// 3. SAVE FIELDS
 
add_action( 'woocommerce_created_customer', 'bbloomer_save_name_fields' );
 
function bbloomer_save_name_fields( $customer_id ) {
    if ( isset( $_POST['billing_phone'] ) ) {
        update_user_meta( $customer_id, 'billing_phone', sanitize_text_field( $_POST['billing_phone'] ) );
        update_user_meta( $customer_id, 'billing_phone', sanitize_text_field($_POST['billing_phone']) );
    }
 
}

• This reply was modified 4 years, 10 months ago by nagendragowda.
• This reply was modified 4 years, 10 months ago by nagendragowda.

EDIT: question misread

Note: instead of printing html in the woocommerce_register_form hook (Step 1) you can also use woocommerce_form_field(), this might be more recommended.

See following example

Regards

• This reply was modified 4 years, 10 months ago by crslz.