IacopoC

<?php define('EMPTY_TRASH_DAYS', 30); ?>

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<?php do_action( 'woocommerce_check_cart_items' ); ?>

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<?php 
// return true if we are in the cart page 
is_cart();
// return true if we are in the checkout page
is_checkout();

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/**
 * Enqueue css
 **/
function load_custom_wp_admin_style() {
        wp_register_style( 'style.css', plugins_url('/css/style.css', __FILE__), false, '1.0.0' );
        wp_enqueue_style( 'style.css' );
}
add_action( 'admin_enqueue_scripts', 'load_custom_wp_admin_style' );

IacopoC

<?php add_action('wp_head', 'add_google_analytics');
function add_google_analytics() {
// Insert your GA code here
} 

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<?php
// enqueue font awersome from local css folder

function enqueue_fontawersome_stylesheets(){
	wp_enqueue_style('font-awesome', get_stylesheet_directory_uri() . '/css/font-awesome.css'); 
}
add_action('wp_enqueue_scripts','enqueue_fontawersome_stylesheets');

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<?php if(ICL_LANGUAGE_CODE=='en'): 
// do something
elseif(ICL_LANGUAGE_CODE=='it'): 
// do something else
endif; ?>

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<?php 
// Wc add notice can be used to create error, notice or success messages in WooCommerce. In this case we see error notice.
wc_add_notice(  $message,  $notice_type = 'error' ); 

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<?php
$args = [
    'posts_per_page'   => 10,
    'post_type'        => 'speaker',
    'meta_key'         => 'speaker-front-page',
    'meta_value'       => '1',
    'orderby'          => 'customq_last_word',          //<-- Custom ordering
    'order'            => 'ASC'
];

IacopoC

<?php
// Allow cpt in category list
add_filter('pre_get_posts', 'query_post_type');
function query_post_type($query) {
  if( is_category() ) {
    $post_type = get_query_var('post_type');
    if($post_type)
        $post_type = $post_type;
    else
        $post_type = array('nav_menu_item', 'post', 'name_of_post_type'); // don't forget nav_menu_item to allow menus to work!