Question

PHP

<?php
if(isset($_POST['submit'])){
    #Email Msg Details
    $emailSendTo = "myemail@email.com";
    $emailSubj = "New Professor / Course Suggestion";
    $selected_radio = $_POST['addType'];
    $course_prof_name = $_POST['name']= trim(strip_tags(addslashes($_POST['name'])));
    $select_dep = $_POST['deptName']= trim(strip_tags(addslashes($_POST['deptName'])));
    $email = $_POST['email']= trim(strip_tags(addslashes($_POST['email'])));


/* I can't remember if it should be '' or NULL, but some simple testing will let you know which it is*/
    if(($_POST['addType']) != NULL){
         if(($_POST['name']) != NULL){
            if(($_POST['deptName']) != NULL){
                if(($_POST['email']) != NULL){
                    $selected_radio = $_POST['addType'];
                    if(eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$", $emailSendTo)) { 
                        return; 
                    } 
                    else { 
                        echo "<span color='red;'>Invalid email address.</span>"; 
                    } 
                }
                else{
                    echo "<span color='red;'>Oops need an email address.</span>";
                }
            }
            else{
                echo "<span color='red;'>Oops need a department.</span>";
            }
        }
        else{
            echo "<span color='red;'>Oops need a name.</span>";
        }
    }
    else{
        echo "<span color='red;'>Please select a radio option.</span>";
    }
}
    $email_message .= "Suggestion Type: ".$selected_radio."\n";
    $email_message .= "Suggestion Name: ".$course_prof_name."\n";
    $email_message .= "Department: ".$select_dep."\n";
    $email_message .= "Email: ".$email."\n";   

// create email headers
$headers = 'From: Anonymous User '."\r\n".
'Reply-To: '.$email_from."\r\n" .
'X-Mailer: PHP/' . phpversion();
@mail($emailSendTo, $emailSubj, $email_message, $headers);  
?>

是什么注意：未定义的索引：第13行的C：\ xampp \ htdocs \ urd \ add_p_c.php中的addType 请选择一个无线电选项。注意：未定义的变量：第41行的C：\ xampp \ htdocs \ urd \ add_p_c.php中的email_message

注意：未定义的变量：第48行的C：\ xampp \ htdocs \ urd \ add_p_c.php中的email_from

意思？

Answer 1

您的作业是正确的，但不存在变量$string（您在第6,7行中引用等等）。这就是为什么它抱怨未定义的变量string。

对于第11行，你想要：

if(isset($_POST['var']))

对于未定义的方法，您尚未定义该方法（或至少可以从第39行调用的位置）。

Answer 2

看来$ string未定义。

Answer 3

我在任何地方都没有看到$ string的定义。

Answer 4

@ user700070：更改

$course_prof_name = $_POST['name']= trim(strip_tags(addslashes($string)));
$select_dep = $_POST['deptName']= trim(strip_tags(addslashes($string)));
$email = $_POST['email']= trim(strip_tags(addslashes($string)));

到

$course_prof_name = $_POST['name'];
$select_dep = $_POST['deptName'];
$email = $_POST['email'];

您的HTML（我在您编辑帖子并删除之前看到的示例）也应该从

更改

Professor<input type='radio' name='addType' />&nbsp;&nbsp;Course<input type='radio' name='addType' />

到

Professor<input type="radio" name="addType" value="Professor" />&nbsp;&nbsp;Course<input type="radio" name="addType" value="Course" />

否则addType将始终为空。

然而，更多的错误由Php抛出

4 个答案: