如何将图像从计算机上传到php文件？ [关闭]

Question

关闭。这个问题是off-topic。它当前不接受答案。

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是否要改善此问题？ Update the question，因此堆栈溢出为on-topic。

[<14小时前关闭。

我想知道为什么这段代码不断给我错误消息

<?php
if(isset($_POST['submit'])) {
    $file = $_FILES['file'];

    $fileName = $_FILES['file']['name'];
    $fileTmpName = $_FILES['file']['tmp_name'];
    $fileSize = $_FILES['file']['size'];
    $fileError = $_FILES['file']['error'];
    $fileType = $_FILES['file']['type'];

    $fileExt = explode('.', $fileName);
    $fileActualExt = strtolower(end($fileExt));

    $allowed = array('jpg', 'jpeg', 'png');

    if (in_array($fileActualExt, $allowed)) {
        if($fileError === 0){
        if ($fileSize < 50000000) {
            $fileNameNew = uniqid ('',true).".".$fileActualExt;
            $fileDestination = 'uploads/'.$fileNameNew;
            move_uploaded_file($fileTmpName,$fileDesination);
            header("Location:cart.php?uploadsuccess");
        } else 
            echo "Your file is too big!";
        }
    } else {
            echo"There was an error uploading your file!";      
            }
        } else {
    echo"You cannot upload files of this type!";
}

这是我雇用的；但它一直给我错误代码
“您无法上传此类型的文件！”
不管我做什么，都没有图像上传。 

Answer 1

我注意到的一件事是这段代码中括号的用法很奇怪。当前在您的代码中有相等的数字，但是如果您学习代码，它们将无法正确平衡。也许这可能有帮助

if(isset($_POST['submit'])) {
    $file = $_FILES['file'];

    $fileName = $_FILES['file']['name'];
    $fileTmpName = $_FILES['file']['tmp_name'];
    $fileSize = $_FILES['file']['size'];
    $fileError = $_FILES['file']['error'];
    $fileType = $_FILES['file']['type'];

    $fileExt = explode('.', $fileName);
    $fileActualExt = strtolower(end($fileExt));

    $allowed = array('jpg', 'jpeg', 'png');

    if (in_array($fileActualExt, $allowed)) {

        if($fileError === 0){
            if ($fileSize < 50000000) {
                $fileNameNew = uniqid ('',true).".".$fileActualExt;
                $fileDestination = 'uploads/'.$fileNameNew;
                move_uploaded_file($fileTmpName,$fileDesination);
                header("Location:cart.php?uploadsuccess");
            } else {
                echo "Your file is too big!";
            }
        } else {#<---------- brace here
            echo "There was an error uploading your file!";      
        }
    } else {
        echo"You cannot upload files of this type!";
    }
}#<------------- closing brace here

Answer 2

您的代码几乎正确，除了一个变量名错字“ $ fileDesination”。

下面是更新的代码：

$fileDestination = 'uploads/'.$fileNameNew;
move_uploaded_file($fileTmpName,$fileDestination);

您是否在表单标签中添加了enctype="multipart/form-data"？像：