<?php
$a=1.1;
echo "\$a=".$a."<br>";
$b=100;
echo "\$b=".$b."<br>";
$c=$a*$b;
echo "\$c=\$a*\$b=";
echo ($c);

echo "<br>-----------<br>";
$a=1.1;
echo "\$a=";
var_dump ($a);
$b=100;
echo "\$b=";
var_dump ($b);
$c=$a*$b;
echo "\$c=";
var_dump ($c);
?>