PHP容易计算器

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Release： 2016-06-13 11:33:08

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PHP简单计算器

这个是运用PHP的条件控制语句写的，比较简单，消化下...

PHP实现简单计算器（使用分支结构） "; } else if( !is_numeric($_POST["num1"])){ $mess .= "第一个数必须为数字！
"; } if( $_POST["num2"] == ""){ $mess .= "第二个数不能为空！
"; } else{ if( !is_numeric($_POST["num2"])){ $mess .= "第二个数必须为数字！
"; } else if( $_POST["opt"] == "/" && $_POST["num2"] == 0){ $mess .= "除数不能为0"; } } } ?>

Copy after login

'; } ?>

计算器
" />		" />
'; if( !$mess){ $sum = 0; switch($_POST["opt"]){ case "+": $sum = $_POST["num1"] + $_POST["num2"];break; case "-": $sum = $_POST["num1"] - $_POST["num2"];break; case "x": $sum = $_POST["num1"] * $_POST["num2"];break; case "/": $sum = $_POST["num1"] / $_POST["num2"];break; case "%": $sum = $_POST["num1"] % $_POST["num2"];break; } echo "结果: {$_POST['num1']} {$_POST['opt']} {$_POST['num2']} = {$sum}"; } else{ echo $mess; } echo '

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