Question

我有一个更新记录的代码及其工作正常我唯一的问题是，当我试图弄乱代码以查看它是否正常工作并尝试提交时，警报消息始终显示“成功更新”它应该是“更新失败“我试着总是显示这个”成功更新“。有人可以帮我这个吗？

这是我的代码

class.user.php

public function  upload($id,$FILE_NAME,$FILE_SIZE,$FILE_TYPE,$username,$password,$province)
{
$stmt = $this->db->prepare("UPDATE tish_images SET  FILE_NAME=:FILE_NAME,FILE_SIZE=:FILE_SIZE,FILE_TYPE=:FILE_TYPE,username=:username,password=:password,province=:province WHERE id=:id");

$errors= array();
foreach($_FILES['files']['tmp_name'] as $key => $error ){
if ($error != UPLOAD_ERR_OK) {
    $errors[] = $_FILES['files']['name'][$key] . ' was not uploaded.';
    continue;
}
$file_name = $key.$_FILES['files']['name'][$key];
$file_size = $_FILES['files']['size'][$key];
$file_tmp  = $_FILES['files']['tmp_name'][$key];
$file_type = $_FILES['files']['type'][$key];  
if($file_size > 2097152){
    $errors[] = 'File size must be less than 2 MB';
    continue;
}
try{
        $stmt->bindParam( ":id", $id);
        $stmt->bindParam( ":FILE_NAME", $file_name , PDO::PARAM_STR );
        $stmt->bindParam( ":FILE_SIZE", $file_size, PDO::PARAM_STR );
        $stmt->bindParam( ":FILE_TYPE", $file_type, PDO::PARAM_STR );
        $stmt->bindParam( ":username", $username);
        $stmt->bindParam( ":password", $password);
        $stmt->bindParam( ":province", $province);
        $stmt->execute();
        return true;

    $desired_dir="image_uploads";

    if(is_dir($desired_dir)==false)
    {
        mkdir($desired_dir, 0700);// Create directory if it does not exist
    }
    if(is_file($desired_dir.'/'.$file_name)==false)
    {
        move_uploaded_file($file_tmp,$desired_dir.'/'.$file_name);
    }
    else
    {    //rename the file if another one exist
        $new_file=$desired_dir.'/'.$file_name.time();
        move_uploaded_file($file_tmp,$new_file) ;               
    }
}
catch(PDOException $e)
{
  echo $e->getMessage();
  return false;

}   
}
}

update.php

<?php
include_once 'DB.php';
$username = isset($_GET['username']) ? $_GET['username'] : '';
$password = isset($_GET['password']) ? $_GET['password'] : '';
$province = isset($_GET['province']) ? $_GET['province'] : '';
$FILE_NAME = isset($_GET['FILE_NAME']) ? $_GET['FILE_NAME'] : '';
$FILE_SIZE = isset($_GET['FILE_SIZE']) ? $_GET['FILE_SIZE'] : '';
$FILE_TYPE = isset($_GET['FILE_TYPE']) ? $_GET['FILE_TYPE'] : '';

if(isset($_FILES['files'])){
$id = $_GET['id'];
$username = $_POST['username'];
$password = $_POST['password'];
$province = $_POST['province'];

if($crud->upload($id,$FILE_NAME,$FILE_SIZE,$FILE_TYPE,$username,$password,$province))
{
    echo "<script type='text/javascript'>alert('Successfully Updated!'); </script>";
}
else
{
    echo "<script type='text/javascript'>alert('Updating Failed!'); </script>";
}

}
if(isset($_GET['id']))
    {
    $id = $_GET['id'];
    extract($crud->getID($id));
    }
?>

Answer 1

您检查$ crud-＆gt; upload（）是true还是false并显示js msgbox作为回报并且根据您的代码，没有任何内容返回true或false。同时尝试按我的方式设置括号，使其更容易阅读。避免继续使用。所有这一切都是将脚本继续到下一个语句。

试试这个:(将session_start（）;放在主索引的最顶端）

public function  upload($id,$FILE_NAME,$FILE_SIZE,$FILE_TYPE,$username,$password,$province)
{
    $stmt = $this->db->prepare("UPDATE tish_images SET  FILE_NAME=:FILE_NAME,FILE_SIZE=:FILE_SIZE,FILE_TYPE=:FILE_TYPE,username=:username,password=:password,province=:province WHERE id=:id");

    $_SESSION['errors'] = array(); //register an empty session array

    foreach($_FILES['files']['tmp_name'] as $key => $error )
    {
        if ($error != UPLOAD_ERR_OK)
        {
            $_SESSION['errors'] = $_FILES['files']['name'][$key] . ' was not uploaded.';
            //continue;
            return FALSE;
        }
        $file_name = $key.$_FILES['files']['name'][$key];
        $file_size = $_FILES['files']['size'][$key];
        $file_tmp  = $_FILES['files']['tmp_name'][$key];
        $file_type = $_FILES['files']['type'][$key];  
        if($file_size > 2097152)
        {
            $_SESSION['errors'] = 'File size must be less than 2 MB';
            //continue;
            return FALSE;
        }

        try
        {
            $stmt->bindParam( ":id", $id);
            $stmt->bindParam( ":FILE_NAME", $file_name , PDO::PARAM_STR );
            $stmt->bindParam( ":FILE_SIZE", $file_size, PDO::PARAM_STR );
            $stmt->bindParam( ":FILE_TYPE", $file_type, PDO::PARAM_STR );
            $stmt->bindParam( ":username", $username);
            $stmt->bindParam( ":password", $password);
            $stmt->bindParam( ":province", $province);
            $stmt->execute();

            $desired_dir="image_uploads";

            if(is_dir($desired_dir)==false)
            {
                mkdir($desired_dir, 0700);// Create directory if it does not exist
            }
            if(is_file($desired_dir.'/'.$file_name)==false)
            {
                move_uploaded_file($file_tmp,$desired_dir.'/'.$file_name);
                return TRUE;
            }
            else
            {    //rename the file if another one exist
                $new_file=$desired_dir.'/'.$file_name.time();
                move_uploaded_file($file_tmp,$new_file);  
                return TRUE;             
            }
        }
        catch(PDOException $e)
        {
          echo $e->getMessage();
          return false;
        }   
    }
}

即使我使用PDO输入错误，警报消息也始终显示“已成功更新”？

1 个答案: