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<?php
// Display Input Field on Backend
add_action( 'woocommerce_product_options_general_product_data', function () {
  global $woocommerce, $post;  
  echo '<div class="options_group">';  
woocommerce_wp_text_input( 
	array( 
		'id'          => 'product_key_features', 
		'label'       => __( 'Product Key Features', 'woocommerce' ), 
		'placeholder' => 'Enter product key features (3 words)',

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$mail->SMTPOptions = array(
        'ssl' => array(
            'verify_peer' => false,
            'verify_peer_name' => false,
            'allow_self_signed' => true
        )
    );

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<?php
/**
 * Admin new order email
 */
$order = new WC_order( $item_data->order_id );

echo "= " . $email_heading . " =\n\n";

$opening_paragraph = __( 'A new order has been made by %s. The details of the item are as follows:', 'custom-email' );

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<?php
/**
 * Admin new order email
 */
$order = new WC_order( $item_data->order_id );
$opening_paragraph = __( 'A new order has been made by %s. The details of the item are as follows:', 'custom-email' );

?>

<?php do_action( 'woocommerce_email_header', $email_heading ); ?>

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<?php
/**
 * Handles email sending
 */
class Custom_Email_Manager {

	/**
	 * Constructor sets up actions
	 */
	public function __construct() {

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<?php

  //response generation function

  $response = "";

  //function to generate response
  function my_contact_form_generate_response($type, $message){

    global $response;

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<?php
/**
 * Contact form functionality
 * Used within the loop
 * @link https://developer.wordpress.org/reference/functions/wp_nonce_field/
 * @link https://codex.wordpress.org/Class_Reference/WP_Error
 * @link https://developer.wordpress.org/reference/functions/wp_is_mobile/
 * @link https://developer.wordpress.org/reference/functions/wp_kses_data/
 * @link https://developer.wordpress.org/reference/functions/wp_remote_retrieve_response_code/
 * @link https://developer.wordpress.org/reference/functions/wp_get_referer/

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<?php
/**
 * Contact form functionality
 * Used within the loop
 * @link https://developer.wordpress.org/reference/functions/wp_nonce_field/
 * @link https://codex.wordpress.org/Class_Reference/WP_Error
 */
 
 
defined( 'ABSPATH' ) or die( 'No script kiddies please!' );

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/*****************************************************/
/******** WOO CART / CHECKOUT / ACCOUNT PAGES ********/
/*****************************************************/

/*** MAIN FORMS BACKGROUND COLOR ***/
.woocommerce table.shop_table,
.woocommerce form.checkout_coupon, 
.woocommerce form.login, 
.woocommerce form.register,
#add_payment_method #payment, 

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<?php // For implementation instructions see: https://aceplugins.com/how-to-add-a-code-snippet/	

/**
 * Add link icons.
 *
 * Adds a external-link icon to external links only.
 */
function ace_add_external_link_icon(  ) {
	wp_register_script( 'external-link-icon', false );
	wp_enqueue_script( 'external-link-icon' );