To find the max or largest number from an Array we need the use the predefined function max of PHP.
Only number is allowed in the array list.
<!DOCTYPE html>
<html>
<body>
<?php
echo(max(45,4,6,8,10) . "<br>");
echo(max(22,14,68,18,15) . "<br>");
echo(max(array(4,6,12,10)) . "<br>");
echo(max(array(4200,1333,4577,12)));
?>
</body>
</html>