Question

这真的让我感动.....我一直得到一个未定义的变量，即使它在那里！我该如何摆脱这个错误？更不用说由于使用xampp而不是在实时服务器上，我甚至不确定表单是否有效

contact.php上的表格

        <div class="col-md-6 col-md-offset-3 emailForm">
                    <?php if (isset($result)) { echo "$result";} ?>
            <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
                <div class="form-group">
                    <label for="name">Your Name:</label>
                    <input type="text" name="name" class="form-control" value="<?php echo isset($_POST['name']) ? $_POST['name'] : ''; ?>" />

                </div>
                <div class="form-group">
                    <label for="subject">Subject:</label>
                    <input type="text" name="subject" class="form-control" value="<?php echo isset($_POST['name']) ? $_POST['subject'] : ''; ?>" />
                </div>
                <div class="form-group">
                    <label for="email">Your Email Address:</label>
                    <input type="email" name="email" class="form-control" value="<?php echo isset($_POST['name']) ? $_POST['email'] : ''; ?>" />
                </div>
                <div class="form-group">
                    <label for="message">Your Message:</label>
                    <textarea class="form-control" rows="5" name="message"><?php echo isset($_POST['name']) ? $_POST['message'] : ''; ?></textarea>
                </div>
                <div class="text-center">
                    <input type="submit" name="submit" class="btn btn-success btn-lg" value="Submit"/>
                </div>
            </form>
    <!-- Contact Form Ends -->
        </div>

sendemail.php代码

<?php

     if(isset($_POST["submit"])) {              
         if (!$_POST['name']) { 
             $error="<br />Please enter your name"; 
         }       
         if (!$_POST['subject']) { 
             $error.="<br />Please enter a subject"; 
         }          
         if (!$_POST['email']) { 
             $error.="<br />Please enter your email address"; 
         }          
         if (!$_POST['message']) { 
             $error.="<br />Please enter a message"; 
         }                   
         if ($_POST['email']!="" AND !filter_var($_POST['email'],FILTER_VALIDATE_EMAIL)) {          
            $error.="<br />Please enter a valid email address"; 
         }          
         if ($error) { 
             $result='<div class="alert alert-danger"><strong>There were error(s) in your form:</strong>'.$error.'</div>';           
         } else { 
            if (mail("support@kf.com", "New Online Message!", "Name: ". $_POST['name']." 
                Name: ".$_POST['name']."             
                Subject: ".$_POST['subject'])) { 
         $result='<div class="alert alert-success text-center"><strong>Thank you!</strong> Please allow 24 to 48 hours for our support team to get back to you. Thank you. </div>';      
         } else {        
            $result='<div class="alert alert-danger">Sorry, there was an error sending your message. Please try again later.</div>';         
        }    
    }    
}

?>

Answer 1

尝试使用此代码：

<?php

     $error = "";
       if(isset($_POST["submit"])) {              
         if ($_POST['name'] == "") { 
             $error .="<br />Please enter your name"; 
         }       
         if ($_POST['subject'] == "") { 
             $error.="<br />Please enter a subject"; 
         }          
         if ($_POST['email'] == "") { 
             $error.="<br />Please enter your email address"; 
         }          
         if ($_POST['message'] == "") { 
             $error.="<br />Please enter a message"; 
         }                   
         if ($_POST['email']!="" AND !filter_var($_POST['email'],FILTER_VALIDATE_EMAIL)) {          
            $error.="<br />Please enter a valid email address"; 
         }          
         if ($error) { 
             $result='<div class="alert alert-danger"><strong>There were error(s) in your form:</strong>'.$error.'</div>';           
         } else { 
            if (mail("support@kanifinancial.com", "New Online Message!", "Name: ".  $_POST['name']." 
                Name: ".$_POST['name']."             
                Subject: ".$_POST['subject'])) { 
         $result='<div class="alert alert-success text-center"><strong>Thank you!</strong> Please allow 24 to 48 hours for our support team to get back to you. Thank you. </div>';      
         } else {        
            $result='<div class="alert alert-danger">Sorry, there was an error sending your message. Please try again later.</div>';         
        }    
    }    
}

?>

Answer 2

你已经在if块中定义了$ error变量，它的范围仅在if块中。在开头的if块之外定义它。

变量存在但给出未定义的变量错误

2 个答案: