how to check a user is using wifi or cellular data in php
<html>
<head>
<script type="text/javascript">
function checkWIFI() {
var output = document.getElementById('connectionCheck');
var html = "Checking...<br/>Connection: ";
if (navigator.connection) {
var type = navigator.connection.type;
html += type
} else {
html += "Connection type not supported.";
}
output.innerHTML = html;
}
</script>
</head>
<body onload="checkWIFI();">
<div id="connectionCheck">
</div>
</body>
</html>