将文件名更改为用户名 PHP

Question

我希望文件名不是用户想要命名的文件名，而是用户的用户名。正如您在下面的代码中看到的，我从会话中获取了用户的用户名。现在，我只想将它应用于 $_FILES，但仅用 $username 替换 $_FILES["fileToUpload"]["name"] 并没有奏效。我不确定我做错了什么，所以我把它改回来了。请看一下。

upload.php

<?php
include("functions.php");
session_start();
$username = $_SESSION['username'];

$target_dir = "uploads/";
$target_file = $target_dir . $_FILES["fileToUpload"]["name"];
$uploadOk = 1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) {
    $check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
    if($check !== false) {
        echo "File is an image - " . $check["mime"] . ".";
        $uploadOk = 1;
    } else {
        echo "File is not an image.";
        $uploadOk = 0;
    }
}
// Check if file already exists
if (file_exists($target_file)) {
    echo "Sorry, file already exists.";
    $uploadOk = 0;
}
// Check file size
if ($_FILES["fileToUpload"]["size"] > 500000) {
    echo "Sorry, your file is too large.";
    $uploadOk = 0;
}
// Allow certain file formats
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
&& $imageFileType != "gif" ) {
    echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
    $uploadOk = 0;
}
// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
    echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file
} else {
    if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
        echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";
        goTo("home.php");
    } else {
        echo "Sorry, there was an error uploading your file.";
    }
}
?>

Answer 1

您需要将 $target_file 变量更改为您想要的名称，因为这是传递给 move_uploaded_file() 的名称。我在您的代码中没有看到您实际将此变量设置为他们的用户名的任何地方（现在它仍在使用他们上传时选择的名称）。

无需过多修改现有代码，看起来您可以这样做：

$target_file = $target_dir . $username . '.' . $imageFileType;

Answer 2

在move_uploaded_file($_FILES["fileToUpload"]["tmp_name"],$target_file之前输入以下代码:

添加代码：

//Here we will get the extension of the file being uploaded
$temp = explode(".",$_FILES["file"]["name"]);

//Here we provide the new name and append the extension
$target_file = $username.'.'.end($temp);

结果：当您调用 move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file) 时，$target_file 名称将是我们分配给 $ _target_file.

将文件名更改为用户名 PHP

Changing file name to the user's name PHP

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upload

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