If you want to add a Button on your website to connect with WhatsApp you can use our free WhatsApp Widget.
We have created this free tool to use WhatsApp as a click to chat button on any website. You can use this WhatsApp button in a PHP, Drupal, Wix, Joomla, PrestaShop, Shopify. Our solution works on top of any CMS or PHP development.
You can create your account for free and test it.
It takes 5 minutes to configure and you will need just to copy and paste our widget in your header, just before the <body> tag.
This is an example using WordPress.