Question

我有一个html表单，我用它将图片上传到服务器

    <form id="form1" name="form1" method="post" action="testimage.php" enctype="multipart/form-data" >   <table width="1000" border="0">
    <tr>
    <td width="108">ID</td>
    <td width="229">
      <input type="text" name="id" id="id" value="<?php if(isset($_GET['editcat'])){echo $_GET['editcat'] ;}; ?>" tabindex="1" />
   </td>
   <tr>
    <td>Image</td>
    <td>:</td>
    <td><input type="file" name="image" id="image" tabindex="7"  /></td>
    <td>&nbsp;</td>
    </tr>
    <tr>
    <td>User</td>
    <td>:</td>
    <td><input type="text" name="user" id="user" value="<?php echo $user ; ?>" tabindex="8" /></td>
    <td>&nbsp;</td>
    </tr>
    <tr>
    <td>&nbsp;</td>
    <td><?php if(isset($_GET['editcat'])){ ?> <input name="editcat" type="hidden" value="set" /> <?php }?> </td>
    <td><input type="submit" name="submit" id="submit" value="Add/Edit" tabindex="9" />                        </td>
    <td>&nbsp;</td>
  </tr>
</table> </form>

我通过php文件检索此表单数据

       <?php session_start();
       $user_name = $_SESSION['username'];
       $user_pass = $_SESSION['password'];
       if ( $user_name == '' ) {
       header('location:login.php');
       exit();
       }
       ?>
       <?php require_once('connection.php');?>
        <?php require_once('function.php');?>
       <?php 
       $err = 0;
       if(!isset($_SESSION['msgback'])){
       $_SESSION['msgback'] = array();
       }else{
   unset($_SESSION['msgback']);
   $_SESSION['msgback'] = array();
       }
       if(isset($_POST['id'])){
   $id = $_POST['id'];
       }else{
   $id = "";
       }if(isset($_POST['user'])){
   $user = $_POST['user'];
       }else{
   $user="";
        }
       if(!empty($_FILES['image'])){
       $name= basename($_FILES['image']['name']); 
       move_uploaded_file($_FILES["image"]                                  ["tmp_name"],"Hants/admin/uploads/fron_sect/$name")or die(mysql_error());   
        }
         ?>
        <?php
        /////          
        if(isset($_POST['editcat'])){
     if($err == 0){
    if($_POST['id'] == ""){ $_SESSION['msgback'][] = "empty id"; }
        if(empty($_SESSION['msgback'])){
        $user_query = "
        UPDATE  
         pro_category 
        SET  
        `image`='$name',
    `update_user`='$user'
    WHERE  
        `id`='$id'";
        $user_result = mysql_query($user_query) or die(mysql_error());
    $_SESSION['msgback'][] = "Product category is updated sucesfully.";
    header('location:product_cat.php');
    }
   } 
    } 

    ////////Inserting a new Iteme////////
    if(!isset($_POST['editcat'])){ echo "editcat not set" ."<br/>";
   if($err == 0){ 
    if($_POST['id'] == "") {    
         $_SESSION['msgback'][] = "empty id";
        }
        if(empty($_SESSION['msgback'])){
          $user_query = "INSERT                            INTO `pro_category` (`section_id`,`category_name`,`description`,`position`,`visible`,`image`,`pro_view`,`update_user`) VALUES('{$secid}','{$catnam}','{$descrptn}','{$pstion}','{$visble}','{$name}','{$proview}','{$user}')
                                ";
$user_result = mysql_query($user_query) or die(mysql_error());
//if(mysql_affected_rows()){
//$_SESSION['user_name'] = $username;
$_SESSION['msgback'][] = "Successfuly Added";
header('location:product_cat.php');
                    //}
                }else{
                $_SESSION['msgback'][] = "Not Successfuly Added";
                    header('location:product_cat.php');
                //redirect_to("product.php?msgback=msgerr");
                    }
    }
}
?>

当我选择要上传的图片时，此代码运行良好。但在某些情况下，我不需要上传图像，但表单字段的其余部分必须上传到服务器。当我尝试在不选择图像的情况下提交表单时，它会向我显示一个空白页面并且没有任何反应我无法弄清楚错误在哪里。如果有人可以帮助我。

Answer 1

更新您的代码以添加此检查以查看文件是否实际上传：

if ($_FILES['image']['error'] == UPLOAD_ERR_OK) {

Answer 2

您的问题可能在于if(!empty($_FILES['image'])){，因为您说上传图片时效果非常好，但是在您上传图片时收到空白页。

当您没有上传图片并查看正在发送的内容时，我会print_r($_FILES['image])。我怀疑你的empty()仍在挑选某些数组。

也按照建议做了什么davidethell。

没有图像的表单提交错误

2 个答案: