PHP上传图片脚本不起作用

Question

<?
if(isset($_POST['upload'])) {
    if(empty($_FILES['image'])) {
        echo "<p class=\"error\">Please upload an image...</p>\n";
    } else {
    $file_name= $_FILES['image']['name']; // original name
    $file_type = $_FILES['image']['type'];
    $file_size = $_FILES['image']['size'];
    $file_tmp = $_FILES['image']['tmp_name']; // temporary location on server
    $file_error = $_FILES['image']['error']; // reference to future error
    $file_ext = pathinfo($file_name, PATHINFO_EXTENSION);

    if($file_ext != "jpeg" || "jpg" || "gif" || "png") {
        echo "<p class=\"error\">Please upload an image that has the extension .jpg/jpeg, .gif, or .png.</p>\n";
    } else {
        if($file_size > (10000000)) {
            echo "<p class=\"error\">Please upload an image that does not exceed the file size of 10MB.</p>\n";
        } else {
            if($file_error) {
                echo "<p class=\"error\">Sorry, an unexpected error occurred: ".$file_error."</p>\n";
            } else {
                $f_rename = "pfp/".time().".png";
                move_uploaded_file($file_tmp,$f_rename);
                }
            }
       }
    }
}
?>
<!doctype html>
<html>
<head>
<title>Upload</title>
</head>
<body>
<form action="upload_test_image.php" method="POST" enctype="multipart/form-data">
    <input type="file" name="image" />
    <input type="submit" name="upload" value="Upload"/>
</form>
</body>
</html>

I've had trouble uploading any image as I cannot get past the file extension check. 我无法上传任何图片，因为无法通过文件扩展名检查。 As I'm writing this, I'm also trying to dissect the problem on if it is exactly the extension verification that is the problem (could be that it just prints out the error statement I issued due to it being first if...else statement). 在撰写本文时，我还试图剖析问题是否在于扩展验证确实是问题所在（可能是因为它只是打印出我发布的错误声明，原因是它首先出现在... else语句）。 Can anyone help find the problem within that or this code? 任何人都可以在该代码或此代码中帮助找到问题吗？

Answer 1

pathinfo() will need the path of your file not just filename. pathinfo（）将需要文件的路径而不仅仅是文件名。 To get extension you could try this: 要扩展，您可以尝试以下操作：

$extension = preg_replace('@.+\.@', '', $_FILES['image']['name'])

Alternatively you can check $_FILES['image']['type'] as that might have the types you're looking for. 另外，您可以检查$ _FILES ['image'] ['type']，因为其中可能包含您要查找的类型。 finfo might be helpful too: http://php.net/manual/en/function.finfo-file.php finfo可能也有帮助： http ://php.net/manual/en/function.finfo-file.php

Answer 2

I don't think you can do boolean condition like this in PHP. 我不认为您可以在PHP中执行这样的布尔条件。

How about this, declare an array of allowed extensions: 怎么样，声明一个允许的扩展数组：

$extensions = array("jpeg", "jpg", "gif","png");

then check if the file extension is in the array: 然后检查文件扩展名是否在数组中：

if(!in_array($file_ext, $extensions)) {
    //Please upload an image that has the extension .jpg/jpeg, .gif, or .png.
}

PHP上传图片脚本不起作用

问题描述

2 个解决方案

解决方案1
0 已采纳 2016-01-26 00:08:08

解决方案2
0 2016-01-26 00:25:08

PHP上传图片脚本不起作用

问题描述

2 个解决方案

解决方案1 0 已采纳 2016-01-26 00:08:08

解决方案2 0 2016-01-26 00:25:08

解决方案1
0 已采纳 2016-01-26 00:08:08

解决方案2
0 2016-01-26 00:25:08