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  • PHP 简单计算器

     
     
    <!—calculate.php—>
     
    <html>
    <head><title>计算器</title></head>

    <body>

    <form action="result.php" method="post">
    <table border="1">
        <tr><td>第一个数</td><td><input type="text" name="num1"></input></td></tr>
        <tr><td>第二个数</td><td><input type="text" name="num2"></input></td></tr>
        <tr> 
            <td>运算符</td>
            <td>
                <select name="oper"> 
                <option value="+"></option>  
                <option value="-"></option>
                <option value="*"></option>
                <option value="/"></option>
            </td>
        </tr>
        <tr><td colspan="2"><input type="submit" value="结果"></input></td></tr>
    </table>
    <form>

    </body>
    </html>
     
     
    <!—result.php—>

    <?php
        $num1 = $_REQUEST['num1'];
        $num2 = $_REQUEST['num2'];
        $oper = $_REQUEST['oper'];
        
        $result = 0;
        
        switch ($oper) 
        {
            case "+":
                $result = $num1 + $num2;
                break;
            case "-":
                $result = $num1 - $num2;
                break;
            case "*":
                $result = $num1 * $num2;
                break;
            case "/":
                $result = $num1 / $num2;
                break;
        }
        
        echo "$result";
    ?>
        <a href="calculate.php">返回计算页面</a>



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  • 原文地址:https://www.cnblogs.com/helloweworld/p/3133213.html
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