我怎样才能重新上传多个文件 [英] How can i rename multiple files on upload

问题描述

我在这里面临一个小问题。我有以下的形式，我用它来允许用户上传一个或多个文件：

 < form action =RejoinReq。 phpmethod =postenctype =multipart / form-data> 
附件1：< input type =filename =file []id =filemaxlength =500accept =application / pdf，image / */> 
< input type =submitname =submitvalue =Request/> 
< / form> 
  

接下来，我需要在将文件保存到服务器之前重命名文件。为此，我试图使用：
$ b $ p RejoinReq.php

 <？php 
 
 function findexts（$ filename）{
 $ filename = strtolower（$ filename）; 
 $ exts = explode（。，$ _FILES [file] [name]）; 
 $ n = count（$ exts） -  1; 
 $ exts = $ exts [$ n]; 
 return $ exts; 
} 
 $ ext = findexts（$ _ FILES ['file'] ['name']）; 
 $ target =upload /; 
 $ target = $ target。 $ _SESSION ['myusername']。 归队。 。 $ EXT; 
 if（file_exists（upload /。$ _FILES [file] [name]））{
 // echo $ _FILES [file] [name]。  已经存在。 ; 
} 
 else {
 move_uploaded_file（$ _ FILES [file] [tmp_name]，$ target）; 
 // echoStored in：。 上传/。 $ _FILES [ 文件] [ 名称]; 
 
  

更新 - 修改PHP代码

警告： findexts（）期望参数1是字符串， / em>

警告： move_uploaded_file（）期望参数1是字符串，

解决方案

在这里，这应该是你需要的！
$ b

index.html 的形式：

 < form action =RejoinReq.phpmethod =postenctype =multipart / form-data> 
附件：< input type =filename =file []id =filemaxlength =500accept =application / pdf，image / *multiple> 
< input type =submitname =submitvalue =Request> 
< / form> 
  

并接收 RejoinReq.php ：

 <？php 
 
 // config 
 $ upload_dir ='/ var / www / html / upload'; //设置你的上传目录
 $ max_size = 1048576; //最大文件大小：1 MB 
 $ allow_override = FALSE; //允许上传文件覆盖现有文件
 $ valid_exts = array（//允许的扩展名
'gif'，
'jpeg'，
'jpg'，
' png'，
'pdf'，
）; 
 $ valid_types = array（
'image / gif'，
'image / jpeg'，
'image / jpg'，
'image / pjpeg'，
'image / x-png'，
'image / png'，
'text / pdf'，
'application / pdf'，
）; 
 
 //重组文件数组
 $ files = array（）; 
 foreach（$ _FILES ['file'] as $ attr => $ arr）{
 foreach（$ arr as $ k => $ v）{
 $ files [$ k ] [$ attr] = $ v; 
 
 
 
循环遍历文件
 foreach（$ files as $ file）{
 $ status ='Failure'; 
 
 //获取扩展名
 $ extension = pathinfo（$ file ['name']，PATHINFO_EXTENSION）; 
 
 //确保扩展名和类型不为空
 if（！（strlen（$ extension）&& strlen（$ file ['type']）））{
 $ msg ='文件扩展名或类型未找到'; 
 
 $ {
 
 //确保扩展名和类型是允许的
 if（！（in_array（$ file ['type']，$ valid_types）& ;& in_array（$ extension，$ valid_exts）））{
 $ msg =扩展名'$ extension''或文件类型'$ file [type]'是不允许的; 
 
 $ {b 
 $ b //确保文件不为空
 if（！$ file ['size']）{
 $ msg = '文件似乎是空的（0 KB）'; 
 
 else {
 
 //确认文件不是太大
 if（$ file ['size']> $ max_size）{
 $ msg ='文件过大（'.mem（$ file ['size'] / 1024）。'kB>'。floor（$ max_size / 1024）。'kB）'; 
} 
 else {
 
 //在这里重命名文件，因为您需要
 $ target =$ upload_dir / $ _ SESSION [myusername]重新加入$ file [name] ; 
 $ b $ //确保文件不会覆盖
 if（！$ allow_override&& file_exists（$ target））{
 $ msg =文件已经存在; 
 
 $ {b 
 $ b //没有其他错误
 if（$ file ['error']> 0）{
 $ msg =未知的上传错误（代码：$文件[错误]）; 
} 
 else {
 
 //尝试上传
 if（！move_uploaded_file（$ file ['tmp_name']，$ target））{
 $ msg ='上传失败。文件夹问题？ 
} 
其他{
 
 //都好！ 
 $ msg ='上传成功！'; 
 $ status ='成功'; 
 
 
 
 
 
 
 $ out [] =$ file [name] ：$ status。$ msg; 
} 
 
 echo implode（\\\
，$ out）; 
 
 / *文件结尾* / 
  

I am facing a small issue here. I have the following form which I use to allow users to upload one or more files:

<form action="RejoinReq.php" method="post" enctype="multipart/form-data">
    Attachment 1: <input type="file" name="file[]" id="file" maxlength="500" accept="application/pdf,image/*" />
    <input type="submit" name="submit" value="Request" />
</form>

Next, I need to rename the file(s) before saving them to the server. For that I am trying to use:

RejoinReq.php

<?php

function findexts ($filename) {
    $filename = strtolower($filename);
    $exts = explode(".", $_FILES["file"]["name"]);
    $n = count($exts) - 1;
    $exts = $exts[$n];
    return $exts;
}
$ext = findexts($_FILES['file']['name']);
$target = "upload/";
$target = $target . $_SESSION['myusername'] . "Rejoin." . $ext;
if (file_exists("upload/" . $_FILES["file"]["name"])) {
    //echo $_FILES["file"]["name"] . " already exists. ";
}
else {
    move_uploaded_file($_FILES["file"]["tmp_name"],$target);
    //echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
}

Updated - Modification on PHP code

Warning: findexts() expects parameter 1 to be string, array given

Warning: move_uploaded_file() expects parameter 1 to be string, array given

解决方案

Here, this should be all you need!

index.html with the form:

<form action="RejoinReq.php" method="post" enctype="multipart/form-data">
    Attachment(s): <input type="file" name="file[]" id="file" maxlength="500" accept="application/pdf,image/*" multiple>
    <input type="submit" name="submit" value="Request">
</form>

And the receiving RejoinReq.php:

<?php

// config
$upload_dir = '/var/www/html/upload'; // set your upload dir
$max_size = 1048576; // max file size: 1 MB
$allow_override = FALSE; // allow uploading files overriding existing ones
$valid_exts = array( // allowed extensions
    'gif',
    'jpeg',
    'jpg',
    'png',
    'pdf',
);
$valid_types = array(
    'image/gif',
    'image/jpeg',
    'image/jpg',
    'image/pjpeg',
    'image/x-png',
    'image/png',
    'text/pdf',
    'application/pdf',
);

// reorganize files array
$files = array();
foreach ($_FILES['file'] as $attr => $arr) {
    foreach ($arr as $k => $v) {
        $files[$k][$attr] = $v;
    }
}

// loop thru files
foreach ($files as $file) {
    $status = 'Failure';

    // get extension
    $extension = pathinfo($file['name'], PATHINFO_EXTENSION);

    // make sure extension and type are not empty
    if ( ! (strlen($extension) && strlen($file['type']))) {
        $msg = 'File extension or type not found';
    }
    else {

        // make sure extension and type are allowed
        if ( ! (in_array($file['type'], $valid_types) && in_array($extension, $valid_exts))) {
            $msg = "Extension '$extension' or file type '$file[type]' is not permitted";
        }
        else {

            // make sure file is not empty
            if ( ! $file['size']) {
                $msg = 'File seems to be empty (0 KB)';
            }
            else {

                // make sure file is not too large
                if ($file['size'] > $max_size) {
                    $msg = 'File is too large (' . ceil($file['size'] / 1024) . 'kB > ' . floor($max_size / 1024) . 'kB)';
                }
                else {

                    // rename file here as you need
                    $target = "$upload_dir/$_SESSION[myusername]Rejoin.$file[name]";

                    // make sure files don't override
                    if ( ! $allow_override && file_exists($target)) {
                        $msg = "File already exists";
                    }
                    else {

                        // no other errors
                        if ($file['error'] > 0) {
                            $msg = "Unknown upload error (Code: $file[error])";
                        }
                        else {

                            // attempt uploading
                            if ( ! move_uploaded_file($file['tmp_name'], $target)) {
                                $msg = 'Upload failed. Folder issues?';
                            }
                            else {

                                // all good!
                                $msg = 'Upload successful!';
                                $status = 'Success';
                            }
                        }
                    }
                }
            }
        }
    }
    $out[] = "$file[name]: $status. $msg";
}

echo implode("\n", $out);

/* End of file */

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