PHP上传文件 - 图像只检查 [英] PHP Uploading files - image only checking

问题描述

我有一个简单的PHP上传脚本，我已经开始了。我不是最好的PHP。只是寻找一些建议。

我想限制我的脚本只有.JPG，.JPEG，.GIF和.PNG

$ p

$ $ p $ $ $ $ $ $ $ $ $
$ Temp $ Up
* /

＃vars
$ mx = rand（）;
$ advid = $ _ REQUEST [advid];
$ hash = md5（rand）;

＃创建我们的临时目录
mkdir（./ uploads / tempads /\".$ advid。/。$ mx。/。$ hash。/，0777 ，真）;

＃上传目录
$ uploaddir ='./uploads/tempads/'.$advid.'/'.$mx.'/'.$hash.'/';
$ file = $ uploaddir。基本名（$ _ FILES [文件] [名]）;

//我正在考虑一个大的IF语句在这里..

＃上传文件
if（move_uploaded_file（$ _ FILES ['file'] ['' tmp_name']，$ file））{
$ result = 1;
} else {
$ result = 0;
}

sleep（10）;
echo $ result;

？>

解决方案

但是首先，你需要一些额外的位：

  //永远不要假设上传成功
 if（$ _FILES [ 'file'] ['error']！== UPLOAD_ERR_OK）{
 die（Upload failed with error code。$ _FILES ['file'] ['error']）; 
 
 
 $ info = getimagesize（$ _ FILES ['file'] ['tmp_name']）; 
 if（$ info === FALSE）{
 die（无法确定上传文件的图片类型）; （$ info [2]！== IMAGETYPE_GIF）&&（$ info [2]！== IMAGETYPE_JPEG）&&（$ info [2（
）
 
） ]！== IMAGETYPE_PNG））{
 die（Not a gif / jpeg / png）; 
 
  

相关文件此处和此处和这里

I have a simple PHP upload script I have started. I am not the best to PHP. Just looking for some suggestions.

I want to limit my script to only .JPG, .JPEG, .GIF and .PNG

Is this possible?

<?php
/*
    Temp Uploader
*/

    # vars
    $mx=rand();
    $advid=$_REQUEST["advid"];
    $hash=md5(rand);

    # create our temp dir
    mkdir("./uploads/tempads/".$advid."/".$mx."/".$hash."/", 0777, true);

    # upload dir
    $uploaddir = './uploads/tempads/'.$advid.'/'.$mx.'/'.$hash.'/';
    $file = $uploaddir . basename($_FILES['file']['name']);

    // I was thinking of a large IF STATEMENT HERE ..

    # upload the file
    if (move_uploaded_file($_FILES['file']['tmp_name'], $file)) {
      $result = 1;
    } else {
      $result = 0;
    }

    sleep(10);
    echo $result;

?>

解决方案

Yes, quite easily. But first off, you need some extra bits:

// never assume the upload succeeded
if ($_FILES['file']['error'] !== UPLOAD_ERR_OK) {
   die("Upload failed with error code " . $_FILES['file']['error']);
}

$info = getimagesize($_FILES['file']['tmp_name']);
if ($info === FALSE) {
   die("Unable to determine image type of uploaded file");
}

if (($info[2] !== IMAGETYPE_GIF) && ($info[2] !== IMAGETYPE_JPEG) && ($info[2] !== IMAGETYPE_PNG)) {
   die("Not a gif/jpeg/png");
}

relevant docs here and here and here

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