PHP计算运算符例子

试试下面的例子就明白了算术运算符操作。复制并粘贴到test.php文件，下面的PHP程序，并保存它在PHP服务器的文档根目录并使用浏览器浏览。

<html>
<head><title>Arithmetical Operators</title><head>
<body>
<?php
    $a = 42;
    $b = 20;
    
    $c = $a + $b;
    echo "Addtion Operation Result: $c <br/>";
    $c = $a - $b;
    echo "Substraction Operation Result: $c <br/>";
    $c = $a * $b;
    echo "Multiplication Operation Result: $c <br/>";
    $c = $a / $b;
    echo "Division Operation Result: $c <br/>";
    $c = $a % $b;
    echo "Modulus Operation Result: $c <br/>";
    $c = $a++; 
    echo "Increment Operation Result: $c <br/>";
    $c = $a--; 
    echo "Decrement Operation Result: $c <br/>";
?>
</body>
</html>

这将产生以下结果

Addtion Operation Result: 62
Substraction Operation Result: 22
Multiplication Operation Result: 840
Division Operation Result: 2.1
Modulus Operation Result: 2
Increment Operation Result: 42
Decrement Operation Result: 43