PHP导入失败

为了将xls文件从pc上传到MySQL表，我创建了一个PHP上传页面，除了两个问题外，整个过程都很好地满足了需要。 假设进行上传的用户意外关闭了浏览器，或单击了另一个链接；在这种情况下，部分项目上载到MySQL表，其余项目则失败。我如何强制用户等待上传完成，或者创建一个确认框，如果返回false，它将删除已上传的项目

还有另一个问题——是否有一种方法可以在提交后禁用上传按钮，我搜索了谷歌，找到了很多解决方案，但没有一个适用于Chrome浏览器

如果需要，这里是我上传的PHP代码：

这将在提交表单后显示加载程序gif

上传文件

提交后

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谢谢各位，任何帮助都将不胜感激

我喜欢你到目前为止所做的一切。非常好的前瞻性思维，能够预测用户的行为

我建议使用jquery进度条

当然，您还需要一个“onwindow close”检测，这样您就可以弹出一个“确认”对话框

$(window).unload(function() {
   //do something
}

那么你应该有你的功能

在服务器端保持整洁。只是成功或失败都应该做

除此之外。。。。非常好的工作：

在后端尝试以下操作：

class Uploader
{

$responses = [
    'Error : Please Upload Correct Excel File Extension',
    'Error : Please Select Excel File to Import !',
    'Success: Your file has been processed & uploaded.'
];

function returnResponses($response)
{
    return sprintf("<script>alert('%s');
location.replace('import.php');
</script>", $responses[$response]);
}

function checkUpload($file)
{
    $filename=$file["tmp_name"];
    if(isset($_POST["Import_items"]))
    {
        if(empty($filename))
        {
            return $this->returnResponses(1);
        }
    }
    else
    {
        $allowed =  array('csv','xls','xlsx');
        $ff = $file['name'];

        $ext = pathinfo($ff, PATHINFO_EXTENSION);
        if(!in_array($ext,$allowed) ) 
        {
            return "<center>Extension is Not Excel !</center>" . $this->returnResponses(0);
        }
        else{
            //success & process files
            $date = date('Y-m-d');
            //process your file

            return $this->returnResponses(2);
        }
    }
}
}

$uploader = new Uploader();
return $uploader->checkUpload($_FILES['file']);

---

我喜欢你到目前为止所做的一切。非常好的前瞻性思维，能够预测用户的行为

我建议使用jquery进度条

当然，您还需要一个“onwindow close”检测，这样您就可以弹出一个“确认”对话框

$(window).unload(function() {
   //do something
}

那么你应该有你的功能

在服务器端保持整洁。只是成功或失败都应该做

除此之外。。。。非常好的工作：

在后端尝试以下操作：

class Uploader
{

$responses = [
    'Error : Please Upload Correct Excel File Extension',
    'Error : Please Select Excel File to Import !',
    'Success: Your file has been processed & uploaded.'
];

function returnResponses($response)
{
    return sprintf("<script>alert('%s');
location.replace('import.php');
</script>", $responses[$response]);
}

function checkUpload($file)
{
    $filename=$file["tmp_name"];
    if(isset($_POST["Import_items"]))
    {
        if(empty($filename))
        {
            return $this->returnResponses(1);
        }
    }
    else
    {
        $allowed =  array('csv','xls','xlsx');
        $ff = $file['name'];

        $ext = pathinfo($ff, PATHINFO_EXTENSION);
        if(!in_array($ext,$allowed) ) 
        {
            return "<center>Extension is Not Excel !</center>" . $this->returnResponses(0);
        }
        else{
            //success & process files
            $date = date('Y-m-d');
            //process your file

            return $this->returnResponses(2);
        }
    }
}
}

$uploader = new Uploader();
return $uploader->checkUpload($_FILES['file']);

class Uploader
{

$responses = [
    'Error : Please Upload Correct Excel File Extension',
    'Error : Please Select Excel File to Import !',
    'Success: Your file has been processed & uploaded.'
];

function returnResponses($response)
{
    return sprintf("<script>alert('%s');
location.replace('import.php');
</script>", $responses[$response]);
}

function checkUpload($file)
{
    $filename=$file["tmp_name"];
    if(isset($_POST["Import_items"]))
    {
        if(empty($filename))
        {
            return $this->returnResponses(1);
        }
    }
    else
    {
        $allowed =  array('csv','xls','xlsx');
        $ff = $file['name'];

        $ext = pathinfo($ff, PATHINFO_EXTENSION);
        if(!in_array($ext,$allowed) ) 
        {
            return "<center>Extension is Not Excel !</center>" . $this->returnResponses(0);
        }
        else{
            //success & process files
            $date = date('Y-m-d');
            //process your file

            return $this->returnResponses(2);
        }
    }
}
}

$uploader = new Uploader();
return $uploader->checkUpload($_FILES['file']);