PHP空白白页，无错误

我有一个PHP页面，我在本地开发，运行良好。上传到服务器后，我现在只得到一个空白的白色屏幕？这是完全相同的代码，可以在本地正常工作，但不能远程工作。我已经尝试设置错误报告，但仍然没有给我任何错误，只是一个空白的白色屏幕

守则：

    $firstname = $phone = $email = $picture = $sqlcon = "";
    $firstnameErr = $phoneErr = $emailErr = $pictureErr = $sqlErr = $filterErr = "";
    $statusmsg = "";
    $newpicture = $registered = "false";
    
    if ($_SERVER["REQUEST_METHOD"] == "POST") {
    
        // If the user has not entered a firstname and has not entered details previously
        if ((empty($_POST["firstname"])) && empty($_POST["hfirst"])) {
        
            $firstnameErr = "Firstname is required for submission";
        }
        else {
        
            if (!empty($_POST["firstname"])) {
            
                $firstname = $_POST["firstname"];
            }
            else {
            
                $firstname = $_POST["hfirst"];
            }
            
            if (!preg_match("/^[a-zA-Z ]*$/", $firstname)) { 
            
                $firstnameErr="Please ensure you have entered only characters for your first name";
            }
        }
        
        // If the user has not entered a phone number and has not entered details previously
        if ((empty($_POST["phone"])) && (empty($_POST["hphone"]))) {
        
            $phoneErr = "Please ensure you have entered a phone number"; 
        }
        else {
        
            if (!empty($_POST["phone"])) {
            
                $phone = $_POST["phone"];
            }
            else {
            
                $phone = $_POST["hphone"];
            }
            
            if (!is_numeric($phone)) {
                
                $phoneErr = "Please ensure you have entered a valid phone number";
            }
        }
        
        if ((empty($_POST["email"])) && (empty($_POST["hemail"]))) {
        
            $emailErr = "Please ensure you have entered your email address";
        }
        else {
        
            if (!empty($_POST["email"])) {
            
                $email = $_POST["email"];
            }
            else {
            
                $email = $_POST["hemail"];
            }
            
            if (!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/", $email)) {
            
                $emailErr = "Please ensure you have entered a valid email address";
            }
        }
        
        if ((empty($_FILES["file"]["name"])) && (empty($_POST["hfile"]))) {
        
            $pictureErr = "Please ensure you have selected a picture to upload";
        }
        else {
        
            if (!empty($_FILES["file"]["name"])) {
            
                if ($_FILES["file"]["size"] > 1048576) {
                    
                        $pictureErr = "The maximum size for a picture is 1mb";
                }
                else {
                    
                    // Ensure the user has selected a file of accepted type
                    $temp = explode(".", $_FILES["file"]["name"]);
                    $ext = end($temp);
                    $allowedExt = array ("gif", "JPEG", "jpg", "png", "JPG");
                        
                    if (!in_array($ext, $allowedExt)) {
                        
                        $pictureErr = "Please ensure you have uploaded an image file";                              
                            
                    }
                }
                
                $newpicture = "true";
                $picture = $_FILES["file"]["name"];
                
            }
            else {

                $picture = $_POST["hpicture"];
            }
        }
        
        $sqlcon = mysqli_connect("localhost", "USER", "PASS", "personneldb");
        
        if (mysqli_connect_errno()) {
                    
            $sqlErr = "Could not connect to database";
            mysqli_close($sqlcon);
        }
        
        if ($newpicture == "true") {
        
            if (!move_uploaded_file($_FILES["file"]["tmp_name"], "./upload/".$_FILES["file"]["name"])) {
                
                $pictureErr = "File could not be uploaded";
            }
        }
        
        if ((empty($firstnameErr)) && (empty($emailErr)) && (empty($phoneErr)) && (empty($pictureErr == "")) && (empty($sqlErr == ""))) {
        
            mysqli_query($sqlcon, "INSERT INTO test2Details(Firstname, Phone, Email, ImageName)
            VALUES ('$firstname', '$phone', '$email', '$picture')");
                    
            // Display status message
            $statusmsg = "Success! Your details and picture have been uploaded and stored"; 
            

        }
        
        if ((!empty($firstname)) && (!empty($phone)) && (!empty($email)) && (!empty($picture))) {
        
            $registered = "true";
        }
        else {
        
            $registered = "false";
        }
        
        
    }
    

---

这将允许在服务器中显示错误，但请记住，不建议在生产环境中使用此选项，也不建议在PHP文件中使用此选项，这些配置必须在PHP.ini中设置

ini_set('display_startup_errors',1); 
ini_set('display_errors',1);
error_reporting(-1);

有关更多信息，请参见：

需要检查的事项：

• $\u服务器[“请求\u方法”]

  ：如果您正在使用另一台服务器，这可能是问题所在，请检查此密钥是否存在，否则，请改用

  isset（$\u POST）

• 数据库连接？，可能是用户或密码有错误

• 检查PHP错误日志，如果不知道存储在哪里，则执行以下操作：

  PHP-i | grep error_log

  ，应返回错误日志的路径

• 检查服务器错误日志，日志通常位于

  /var/log/server

  （服务器可能是lighttpd、apache、nginx、httpd等，具体取决于）

---

或者，您可以使用ini\u set指令并激活

error\u reporting

这意味着过程已完成。一切都很好，代码结束时没有错误

---

您应该像

echo“您已经成功创建了”

一样执行操作，可能是服务器设置不正确？可能是PHP通知-确保live PHP.ini文件的“显示错误”设置为“开”。或者，您可以在带有ini_集的代码中执行此操作（“显示错误”，“打开”）；把这个放在php.ini@your error repoting line-error\u reporting=~E\u ALL&~E\u DEPRECATED&~E\u STRICT&~E\u NOTICE&~warning我认为问题不在于服务器，因为其他所有文件都显示得很好。我已经尝试了所有的错误报告方法，但仍然没有收到任何错误消息：（似乎

$\u服务器

环境未设置。请执行

var\u转储（$\u服务器）

并查看它返回的内容。在服务器上的php.ini文件中？我没有访问该文件的权限否，您可以将其放在php上file@EduardoVerdugoC阿拉塞雷斯：是的，你可以。但从理论上来说，这不太可能，但考虑到OP描述情况的方式，这是不太可能的。