Question

我正在尝试上传图片，如下所示w3schools，但它始终显示错误

Sorry, there was an error uploading your file.

PHP

<?php
if(!isset($_POST["submit"])){
    die('Error');
}
$target_dir = "/var/www/img/";
$target_file = $target_dir . basename($_FILES["file"]["name"]);
$uploadOk = 1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
if(isset($_POST["submit"])) {
    $check = getimagesize($_FILES["file"]["tmp_name"]);
    if($check !== false) {
    echo "File is an image - " . $check["mime"] . ".";
    $uploadOk = 1;
    } else {
    echo "File is not an image.";
    $uploadOk = 0;
    }
}
if (file_exists($target_file)) {
    echo "Sorry, file already exists.";
    $uploadOk = 0;
}
if ($_FILES["file"]["size"] > 500000) {
    echo "Sorry, your file is too large.";
    $uploadOk = 0;
}
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType !=   "jpeg"
&& $imageFileType != "gif" ) {
    echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
    $uploadOk = 0;
}
if ($uploadOk == 0) {
    echo "Sorry, your file was not uploaded.";
} else {
    if (move_uploaded_file($_FILES["file"]["tmp_name"], $target_file)) {
        echo "The file ". basename( $_FILES["file"]["name"]). " has been     uploaded.";
    } else {
        echo "Sorry, there was an error uploading your file.";
    }
}

？>

它已在Windows 10中运行。现在，错误似乎已完成，但正在移动文件或其他错误。

操作系统：Ubuntu 18.04

PHP版本：7.3

Apache2

在php.ini中，设置了file_uploads = On。

Answer 1

您正在使用的功能的文档页面move_uploaded_file()描述了发生故障时的行为。

成功返回TRUE。

如果filename不是有效的上传文件，则不会执行任何操作，并且   move_uploaded_file（）将返回FALSE。

如果文件名是有效的上传文件，但无法移动某些文件名   原因，将不会执行任何操作，并且move_uploaded_file（）将返回   假。此外，还会发出警告。

您可以做的第一件事是enable error and warning reporting，这样您就可以查看是否发出警告。

这样，您将知道文件名或实际文件移动是否有问题-这将指示权限问题。

Answer 2

It may be due to permission to directory you created in /var/www/ folder.

You can check your apache user by using following command

ps -ef | egrep '(httpd|apache2|apache)' | grep -v `whoami` | grep -v root | head -n1 | awk '{print $1}'

You will get the apache user.After that give permission to apache user to access the directory.In my case apache user is daemon so i give permission to this user to access the img directory.

chown -R daemon:daemon img

使用php上传图片无效

2 个答案: