Create Custom Fields in Woocommerce Checkout Page and Display them in Orders Details Page in Admin Area

Create-Custom-Fields-in-Woocommerce-Checkout-Page

<?php


/**
 * Plugin Name: Flowershop - WooCommerceCustomOverrides
 * Plugin URI: http://chillopedia.com
 * Description: Overrides WooCommerce Checkout Form Fields
 * Version: 1.0
 * Author: Nadeem Khan
 * Author URI: http://facebook.com/nadeem.khan
 * License: GPL
 */

//Save this as a php file in a folder (with any name) under wp-content/plugins/ and then activate the plugin to both add custom fields and reorder the fields in woocommerce checkout form:

// Hook in
add_filter('woocommerce_checkout_fields', 'custom_override_shipping_checkout_fields');

// Our hooked in function - $fields is passed via the filter!
function custom_override_shipping_checkout_fields($fields) {
    $fields['shipping']['shipping_location_type'] = array(
        'type' => 'select',
        'label' => __('Location Type', 'woocommerce'),
        'clear' => false,
        'options' => array(
            'home' => __('Home', 'woocommerce'),
            'apartment' => __('Apartment', 'woocommerce'),
            'business' => __('Business', 'woocommerce'),
            'hospital' => __('Hospital', 'woocommerce'),
            'funeral-home' => __('Funeral Home', 'woocommerce'),
            'church' => __('Church', 'woocommerce'),
            'other' => __('Other', 'woocommerce')
        ),
        'placeholder' => _x('Location Type', 'placeholder', 'woocommerce'),
        'required' => true
    );

    $fields['shipping']['shipping_email'] = array(
        'type' => 'text',
        'label' => __('Email Address', 'woocommerce'),
        'clear' => false,
        'placeholder' => _x('Enter Email', 'placeholder', 'woocommerce'),
        'required' => true
    );

    $fields['shipping']['shipping_phone'] = array(
        'type' => 'text',
        'label' => __('Phone', 'woocommerce'),
        'clear' => false,
        'placeholder' => _x('Enter Phone Number', 'placeholder', 'woocommerce'),
        'required' => true
    );

    return $fields;
}

// Hook in
add_filter('woocommerce_checkout_fields', 'custom_override_billing_checkout_fields');

// Our hooked in function - $fields is passed via the filter!
function custom_override_billing_checkout_fields($fields) {
    $fields['billing']['billing_location_type'] = array(
        'type' => 'select',
        'label' => __('Location Type', 'woocommerce'),
        'clear' => false,
        'options' => array(
            'home' => __('Home', 'woocommerce'),
            'apartment' => __('Apartment', 'woocommerce'),
            'business' => __('Business', 'woocommerce'),
            'hospital' => __('Hospital', 'woocommerce'),
            'funeral-home' => __('Funeral Home', 'woocommerce'),
            'church' => __('Church', 'woocommerce'),
            'other' => __('Other', 'woocommerce')
        ),
        'placeholder' => _x('Location Type', 'placeholder', 'woocommerce'),
        'required' => true
    );

    return $fields;
}

add_filter("woocommerce_checkout_fields", "order_shipping_fields");

function order_shipping_fields($fields) {

    $order = array(
        "shipping_country",
        "shipping_first_name",
        "shipping_last_name",
        "shipping_location_type",
        "shipping_address_1",
        "shipping_address_2",
        "shipping_city",
        "shipping_state",
        "shipping_postcode",
        "shipping_email",
        "shipping_phone"
    );
    foreach ($order as $field) {
        $ordered_fields[$field] = $fields["shipping"][$field];
    }

    $fields["shipping"] = $ordered_fields;
    unset($fields['order']['order_comments']);
    return $fields;
}

add_filter("woocommerce_checkout_fields", "order_billing_fields");

function order_billing_fields($fields) {

    $order = array(
        "billing_country",
        "billing_first_name",
        "billing_last_name",
        "billing_location_type",
        "billing_address_1",
        "billing_address_2",
        "billing_city",
        "billing_state",
        "billing_postcode",
        "billing_email",
        "billing_phone"
    );
    foreach ($order as $field) {
        $ordered_fields[$field] = $fields["billing"][$field];
    }

    $fields["billing"] = $ordered_fields;
    return $fields;
}

/**
 * Add the field to the checkout
 */
add_action('woocommerce_after_order_notes', 'personal_message_checkout_field');

function personal_message_checkout_field($checkout) {

    echo '<h3 class="entry-title">' . __('WRITE A PERSONAL MESSAGE') . '</h3>';
    echo '<div class="entry-wrapper">';

    woocommerce_form_field('card_type', array(
        'type' => 'select',
        'class' => array('form-row-wide'),
        'label' => __('Select the card type'),
        'clear' => false,
        'options' => array(
            'anniversary' => __('Anniversary', 'woocommerce'),
            'birthday' => __('Birthday', 'woocommerce'),
            'business-gift' => __('Business Gift', 'woocommerce'),
            'congratulations' => __('Congratulations', 'woocommerce'),
            'funeral' => __('Funeral', 'woocommerce'),
            'get-well' => __('Get Well', 'woocommerce'),
            'grandparents-day' => __('Grandparents Day', 'woocommerce'),
            'housewarming' => __('Housewarming', 'woocommerce'),
            'imsorry' => __('I\'m Sorry', 'woocommerce'),
            'just-because' => __('Just Because', 'woocommerce'),
            'love-and-romance' => __('Love & Romance', 'woocommerce'),
            'new-baby' => __('New Baby', 'woocommerce'),
            'retirement' => __('Retirement', 'woocommerce'),
            'sympathy' => __('Sympathy', 'woocommerce'),
            'thank-you' => __('Thank You', 'woocommerce'),
            'thinking-of-you' => __('Thinking of You', 'woocommerce'),
            'other' => __('Other', 'woocommerce')
        ),
        'required' => true,
        'placeholder' => __('Select card type'),
            ), $checkout->get_value('card_type'));

    woocommerce_form_field('your_message', array(
        'type' => 'textarea',
        'class' => array('form-row form-row-wide'),
        'label' => __('Your Message'),
        'placeholder' => __('Enter your message (must be less than 200 characters)'),
        'required' => true
            ), substr($checkout->get_value('your_message'), 200));
    echo '</div>';
}

add_action('woocommerce_checkout_process', 'my_custom_checkout_field_process');

function my_custom_checkout_field_process() {

    if ($_POST['shipping']['shipping_location_type'] == "select") {
        wc_add_notice(__('Please tell us the Location Type we are delivering to.'), 'error');
    }

    if (!$_POST['card_type']) {
        wc_add_notice(__('Please tell us the type of the Card that we have to deliver.'), 'error');
    }

    if (!$_POST['your_message']) {
        wc_add_notice(__('Please tell us the Message that we have to enter in your card.'), 'error');
    }
}

add_action('woocommerce_checkout_update_order_meta', 'my_custom_checkout_field_update_order_meta');

function my_custom_checkout_field_update_order_meta($order_id) {

    if (!empty($_POST['shipping']['shipping_location_type'])) {
        update_post_meta($order_id, 'Location Type', esc_attr($_POST['shipping']['shipping_location_type']));
    }
    if (!empty($_POST['card_type'])) {
        update_post_meta($order_id, 'Card Type', sanitize_text_field($_POST['card_type']));
    }
    if (!empty($_POST['your_message'])) {
        update_post_meta($order_id, 'Your Message', sanitize_text_field($_POST['your_message']));
    }
}

add_action('woocommerce_admin_order_data_after_shipping_address', 'my_custom_fields_display_admin_order_meta', 10, 1);

function my_custom_fields_display_admin_order_meta($order) {
    echo '<p><strong>' . __('Email') . ':</strong><br> ' . get_post_meta($order->id, '_shipping_email', true) . '</p>';
    echo '<p><strong>' . __('Phone') . ':</strong><br> ' . get_post_meta($order->id, '_shipping_phone', true) . '</p>';
    echo '<p><strong>' . __('Location Type') . ':</strong><br> ' . get_post_meta($order->id, '_shipping_location_type', true) . '</p>';
    echo "<h4>Personal Message</h4>";
    echo '<p><strong>' . __('Card Type') . ':</strong><br> ' . get_post_meta($order->id, 'Card Type', true) . '</p>';
    echo '<p><strong>' . __('Your Message') . ':</strong><br> ' . get_post_meta($order->id, 'Your Message', true) . '</p>';
}

how many file I need to create and where I can move these?