PHP 算術運算子示例

在 PHP 中，算術運算子用於對數值執行數學運算。下表突出顯示了 PHP 支援的算術運算子。假設變數“$a”持有 42，變數“$b”持有 20 −

運算子	描述	示例
+	將兩個運算元相加	$a + $b = 62
-	從第一個運算元中減去第二個運算元	$a - $b = 22
*	將兩個運算元相乘	$a * $b = 840
/	將分子除以分母	$a / $b = 2.1
%	模運算子和整數除法後的餘數	$a % $b = 2
++	遞增運算子，將整數值增加一	$a ++ = 43
--	遞減運算子，將整數值減少一	$a -- = 41

示例

以下示例演示如何在 PHP 中使用這些算術運算子 −

<?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";
?>

它將產生以下輸出 −

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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