How to Add Whatsapp Share Button to PHP Website

Sharing link on WhatsApp from mobile website (not application) for Android

Just saw it on a website and seems to work on latest Android with latest chrome and whatsapp now too! Give the link a new shot!

<a href="whatsapp://send?text=The text to share!" data-action="share/whatsapp/share">Share via Whatsapp</a>

Rechecked it today (17^th April 2015):

Works for me on iOS 8 (iPhone 6, latest versions) Android 5 (Nexus 5, latest versions).

It also works on Windows Phone.

Whatsapp sharing button with a countdown variable

The countdown_iam variable is created within a function and only exists within that function. So when the other function (openWhatsApp) tries to use the variable, it can't find it and the error occurs.

You want to access the countdown string from two different functions, so one option would be to create a new function that makes the countdown string and returns it. You can then call that function from both places. I've done that here:

<script>

  function getCountdown() {
    var countdownDate = new Date("Aug 20, 2022 12:00:00").getTime();
    var now = new Date().getTime();
    var distance = (countdownDate - now) / 1000;
    if (distance < 0) {
      return 'SURPRISE!!!';
    } else {
      var days = Math.floor(distance / (60 * 60 * 24));
      var hours = Math.floor((distance % (60 * 60 * 24)) / (60 * 60));
      var minutes = Math.floor((distance % (60 * 60)) / 60);
      var seconds = Math.floor(distance % 60);
      return days + "j " + hours + "h " + minutes + "m " + seconds + "s ";
    }
  }

  function openWhatsApp() {
    alert('whatsapp://send?text=' + getCountdown());
  }

  setInterval(function() {
    document.getElementById("countdown").innerHTML = getCountdown();
  }, 1000);

</script>

<h2>WhatsApp Sharing Link</h2>
<p id="countdown"></p>
<p><img src="img/whatsapp.png" height="50" size="50" onclick="openWhatsApp()"></p>