Question

请阅读以下代码

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>PHP CORRECT CODE</title>
<style type="text/css">
.error{
    position:absolute;
    color:#FF0000;

}
</style>
<?php
$nameErr = $emailErr = $mobileErr = $cityErr = "";
$name = $email = $mobile = $city = "";

if(isset($_GET['submit']))
{
    if($_SERVER["REQUEST_METHOD"] == "GET")
    {
        //check name
        if(empty($_REQUEST['name']))
        {
            $nameErr = "Name can not be empty";
        }
        else
        {
            $name = $_REQUEST['name'];
        }
        //check email
        if(empty($_REQUEST['email']))
        {
            $emailErr = "Emails can not be empty";
        }
        else
        {
            $email = $_REQUEST['email'];
        }
        //check mobile
        if(empty($_REQUEST['mobile']))
        {
            $mobileErr = "Mobile number can not be empty";
        }
        else
        {
            $mobile = $_REQUEST['mobile'];
        }
        //check city
        if(empty($_REQUEST['city']) or $_REQUEST['city']=="")
        {
            $cityErr = "Please select your city";
        }
        else
        {
            $city = $_REQUEST['city'];
        }
}
else
{
    echo "<script>alert('Aplogies we can not proceed this time. Thier is some issues in the form submission. Please refresh the page or try after some time.')</script>";
}
}
?>

</head>

<body bgcolor="#CCCCCC">
<center>
    <h1>CORRECT FORM INSERTION WITH VALIDATION</h1>
    <form name="correct-form" method="GET" action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" >
        NAME : <input type="text" name="name" id="name" value="<?php echo htmlspecialchars($name); ?>" /><span class="error"><?php echo $nameErr; ?></span>
        <br/><br/>
        EMAIL : <input type="email" name="email" id="email"  value="<?php echo htmlspecialchars($email); ?>" /><span class="error"><?php echo $emailErr; ?></span>
        <br/><br/>
        MOBILE : <input type="text" name="mobile" id="mobile"  value="<?php echo htmlspecialchars($mobile); ?>" /><span class="error"><?php echo $mobileErr; ?></span>
        <br/><br/>
        CITY : <select name="city" id="city" required="required"><span class="error"><?php echo htmlspecialchars($cityErr); ?></span>
                    <option selected="selected" value=""> --Select-- </option>
                    <option value="Jodhpur">JODHPUR</option>
                    <option value="Pali">PALI</option>
                    <option value="Jaipur">JAIPUR</option>
                    <option value="Udaipur">UDAIPUR</option>    
                </select>
        <br/><br/>
        <input type="submit" name="submit" id="submit" value="SUBMIT" />&nbsp;&nbsp;<input type="reset" name="reset" id="reset" value="RESET" />
    </form> 
</center>
</body>
</html>

我已经完成了强制字段检查的完整编码，但是最后一个城市字段对我来说没有显示出错误消息，因为其他字段正在显示。

提前致谢

Answer 1

错误：

CITY : <select name="city" id="city" required="required"><span class="error">Please select your city</span>
    <option selected="selected" value=""> --Select-- </option>
    <option value="Jodhpur">JODHPUR</option>
    <option value="Pali">PALI</option>
    <option value="Jaipur">JAIPUR</option>
    <option value="Udaipur">UDAIPUR</option>    
    </select>

但是浏览器不会渲染它。您无法在<select>控件中插入任意内容。

Answer 2

我得到了答案，我只是在完全结束标记之前显示错误消息。现在正确的代码是。

CITY : <select name="city" id="city" required="required">
                    <option selected="selected" value="">--Select--</option>
                    <option value="Jodhpur">JODHPUR</option>
                    <option value="Pali">PALI</option>
                    <option value="Jaipur">JAIPUR</option>
                    <option value="Udaipur">UDAIPUR</option>    
                </select><span class="error"><?php echo htmlspecialchars($cityErr); ?></span>

未显示错误消息

2 个答案: