在WooCommerce中添加自定义注册字段和电话字段验证问题

注意：页脚中的特殊注册表格与WooCommerce结帐字段有所不同。

在您的代码中，text_domain_woo_validate_reg_form_fields()只是缺少验证功能的钩子。还有一些小错误（已更正） …

检查的最佳地点提交的数据的验证功能，你也应该需要添加另一个用于结账过（而不是使用结账手机领域，用来格式化数据的自定义模式）。

因此，所有相关代码应为：

## --- FOR CHECKOUT --- ##

// Checkout billing phone validation (Checking length)
add_action('woocommerce_checkout_process', 'my_custom_checkout_field_process');
function my_custom_checkout_field_process() {
    if ( $_POST['billing_phone'] && strlen($_POST['billing_phone']) < 10 )
        wc_add_notice( __('Please type a correct phone number…', 'woocommerce'), 'error' );
}

## --- FOR CUSTOM REGISTRATION FORM --- ##

// Add custom fields to registration form.
add_action('woocommerce_register_form_start', 'text_domain_woo_reg_form_fields');
function text_domain_woo_reg_form_fields() {
    ?>
    <div class="formumuz" style="display:flex;">
        <p class="form-row form-row-first">
            <label style="display:none!important;" for="billing_first_name"><?php _e('First name', 'woocommerce'); ?><span class="required">*</span></label>
            <input style="width: 130px; display: inline-block; margin-right:1px;" type="text" class="woocommerce-Input woocommerce-Input--text input-text placeholder" placeholder="İsim / Name *" type="text" class="input-text" name="billing_first_name" id="billing_first_name" value="<?php if (!empty($_POST['billing_first_name'])) esc_attr_e($_POST['billing_first_name']); ?>" />
        </p>
        <p class="form-row form-row-last">
            <label style="display:none!important;" for="billing_last_name"><?php _e('Last name', 'woocommerce'); ?><span class="required">*</span></label>
            <input style="width: 130px; display: inline-block; margin-left:1px;" type="text" class="woocommerce-Input woocommerce-Input--text input-text placeholder" placeholder="Soyisim / Surname *" type="text" class="input-text" name="billing_last_name" id="billing_last_name" value="<?php if (!empty($_POST['billing_last_name'])) esc_attr_e($_POST['billing_last_name']); ?>" />
        </p>
    </div>
    <p style="margin-bottom: 0px; margin-top: 10px;" class="form-row form-row-wide">
        <label style="display:none!important;" for="reg_billing_phone"><?php _e( 'Phone', 'woocommerce' ); ?></label>

        <!--  "You can’t have 2 times the value attribute and you can use "tel" type … (to be removed)" -->
        <input style="width:254px!important;" type="tel" class="woocommerce-Input woocommerce-Input--text input-text placeholder" placeholder="Cep Telefonu / Mobile *" name="billing_phone" id="reg_billing_phone" value="<?php esc_attr_e( $_POST['billing_phone'] ); ?>" /> *
    </p><br>
    <div class="clear"></div>
    <?php
}

// Checking & validation of custom fields in registration form.
add_action('woocommerce_register_post', 'text_domain_woo_validate_reg_form_fields', 10, 3);
function text_domain_woo_validate_reg_form_fields( $username, $email, $validation_errors ) {
    if (isset($_POST['billing_first_name']) && empty($_POST['billing_first_name'])) {
        $validation_errors->add('billing_first_name_error', __('İsim alanı zorunludur! / Name field is required!', 'woocommerce'));
    }
    if (isset($_POST['billing_last_name']) && empty($_POST['billing_last_name'])) {
        $validation_errors->add('billing_last_name_error', __('Soyisim alanı zorunludur! / Surname field is required!', 'woocommerce'));
    }
    if (isset($_POST['billing_phone']) && empty($_POST['billing_phone'])) {
        $validation_errors->add('billing_phone_error', __('Telefon alanı zorunludur! / Phone field is required!', 'woocommerce'));
    }

    // ==> CHECKING PHONE LENGTH (10 character minimal) <==
    if (isset($_POST['billing_phone']) && strlen($_POST['billing_phone']) < 10 ) {
        $validation_errors->add('billing_phone_error', __('Please type a correct phone number…', 'woocommerce'));
    }
    return $validation_errors;
}

// Add custom fields to registration form.
add_action( 'woocommerce_created_customer', 'custom_save_extra_register_fields' ); // <==== Missing
function custom_save_extra_register_fields($customer_id) {
    //First name field
    if (isset($_POST['billing_first_name'])) {
        update_user_meta($customer_id, 'first_name', sanitize_text_field($_POST['billing_first_name']));
        update_user_meta($customer_id, 'billing_first_name', sanitize_text_field($_POST['billing_first_name']));
    }
    //Last name field
    if (isset($_POST['billing_last_name'])) {
        update_user_meta($customer_id, 'last_name', sanitize_text_field($_POST['billing_last_name']));
        update_user_meta($customer_id, 'billing_last_name', sanitize_text_field($_POST['billing_last_name']));
    }
     //Phone field
    if (isset($_POST['billing_phone'])) {
        update_user_meta($customer_id, 'phone', sanitize_text_field($_POST['billing_phone']));
        update_user_meta($customer_id, 'billing_phone', sanitize_text_field($_POST['billing_phone']));
    }
}

代码在您的活动子主题（或主题）的function.php文件中，或者在任何插件文件中。

经过测试和工作

每次将检查电话的最小长度并显示此警报（如果需要）：