PHP 算术运算符示例

在 PHP 中，算术运算符用于对数值执行数学运算。下表突出显示了 PHP 支持的算术运算符。假设变量“$a”持有 42，变量“$b”持有 20 −

运算符	描述	示例
+	将两个操作数相加	$a + $b = 62
-	从第一个操作数中减去第二个操作数	$a - $b = 22
*	将两个操作数相乘	$a * $b = 840
/	将分子除以分母	$a / $b = 2.1
%	模运算符和整数除法后的余数	$a % $b = 2
++	递增运算符，将整数值增加一	$a ++ = 43
--	递减运算符，将整数值减少一	$a -- = 41

示例

以下示例演示如何在 PHP 中使用这些算术运算符 −

<?php
   $a = 42;
   $b = 20;

   $c = $a + $b;
   echo "Addtion Operation Result: $c \n";

   $c = $a - $b;
   echo "Substraction Operation Result: $c \n";

   $c = $a * $b;
   echo "Multiplication Operation Result: $c \n";

   $c = $a / $b;
   echo "Division Operation Result: $c \n";

   $c = $a % $b;
   echo "Modulus Operation Result: $c \n";

   $c = $a++; 
   echo "Increment Operation Result: $c \n";

   $c = $a--; 
   echo "Decrement Operation Result: $c";
?>

它将产生以下输出 −

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

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