<?php
$t;
function myCalculations () {
$x=22;
echo "<p>Test variable oustide of function:<\p>;
echo "Variable x is: $x";
echo "<br>"
echo "Variable t is: $t";
}// Code will only display x
myCalculations();
echo "<p>Test variable inside of function:<\p>;
echo "Variable x is: $x;
echo "<br>";
echo "Variable t is $t;
?>// Code will only display t
</body>
</html>