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// Registering custom post status
function wpb_custom_post_status(){
    register_post_status('inactive', array(
        'label'                     => _x(
 'Inactive', 'post' ),
        'public'                    => false,
        'exclude_from_search'       => false,
        'show_in_admin_all_list'    => true,
        'show_in_admin_status_list' => true,
        'label_count'               => _n_noop( 'Inactive <span class="count">(%s)</span>', 'Inactive <span class="count">(%s)</span>' ),

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Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

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apt-get update && apt-get install openssl

openssl genrsa -out "/etc/ssl/certs/yourdevsite.local.key" 2048  && openssl req -new -key "/etc/ssl/certs/yourdevsite.local.key" -out "/etc/ssl/certs/yourdevsite.local.csr" -subj "/CN=yourdevsite.local/O=yourdevsite.local/C=UK"  && openssl x509 -req -days 365 -in "/etc/ssl/certs/yourdevsite.local.csr" -signkey "/etc/ssl/certs/yourdevsite.local.key" -out "/etc/ssl/certs/yourdevsite.local.crt"


in defualt.apache.conf:

<VirtualHost *:80>
  ServerName yourdevsite.local
  DocumentRoot /var/www/yourdevsite/public/

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<?php
/*
Plugin Name: Heartbeat API Demo
Plugin URI: http://www.strangerstudios.com/wp/heartbeat-api-demo
Description: Minimal example demonstrating the WordPress Heartbeat API being added in WP version 3.6.
Version: .1
Author: strangerstudios

If logged in as a user and viewing the frontend of your website, 
every 15 seconds you should see the following in your Javascript console:

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<?php
/**
 * VSP functions and definitions
 *
 * @link https://developer.wordpress.org/themes/basics/theme-functions/
 *
 * @package VSP
 */

if ( ! function_exists( 'vsp_setup' ) ) :

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<?php

// If you are using Composer
require 'vendor/autoload.php';

use SendGrid\Mail;

$apiKey = getenv('SENDGRID_API_KEY');
$sg = new \SendGrid($apiKey);

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/*global jQuery:true, videojs:true */

(function($, document, window){

  // Wrap localStorage.
  var storage = {
    _get: function(){
      var data = JSON.parse(window.localStorage.getItem('resume'));
      return data ? data : {};
    },

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/*
Delete data from custom_table upon deleting the post
*/
add_action( 'admin_init', 'custom_table_admin_init' );
function custom_table_admin_init() {
    add_action( 'delete_post', 'custom_table_data_delete', 10 );
}
 
function custom_table_data_delete( $pid ) {

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/*--------------------------------------
Woocommerce - Allow Guest Checkout on Certain products
----------------------------------------*/

// Display Guest Checkout Field
add_action( 'woocommerce_product_options_general_product_data', 'woo_add_custom_general_fields' );
function woo_add_custom_general_fields() {
  global $woocommerce, $post;
  
  echo '<div class="options_group">';

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301 moved permanently (redirect): 
<?php 
header('HTTP/1.1 301 Moved Permanently');
header('Location: http://www.example.com');
die();
?> 

302 moved temporarily(redirect): 
<?php 
header('Location: http://www.example.com');