PHP FTP_PUT上传到目录

我自己从一本名为“ PHP完整参考 – PHP5.2”的书中学习PHP
我目前在第11章FTP,上传,删除,makedir等,但遇到了本书未涵盖的几个问题：

根据我的教科书,这是一个上传到服务器的简单代码：

$connect=ftp_connect("johnsite.com");
$result=ftp_login($connect,"john@johnsite","johnnyWalker");
if(!$result){
echo'Could not connect to Server';  
}
$result=ftp_put($connect,'myFile.PHP',FTP_ASCII);
echo'UPLOADING FILE......';
if($result){
    echo'File Uploaded!';
}

我的问题：

>上传到哪个目录,如果我要上传到目录,我将如何修改代码说public_html / images / myFile.jpg
>在示例中myFile.PHP是硬编码的,如果我想要用户选择要上传的文件怎么办？我假设你可以做这样的事情是正确的：

<input type="file" name="myFile" value="upload a file" />
<input type="submit" name="upload" />
 
if(isset($_POST['upload'])){
    $fileName=$_POST['myFile']; //file is now assigned to var name
    $result=ftp_put($connect,$fileName,FTP_ASCII); //file linked to var name being uploaded
}

这是最有效的安全方式吗？

谢谢你的阅读

由于@Bonner表示Fabien的答案不正确,因为您正在寻找一个脚本来将文件从您网站上的页面上传到服务器.

首先要记住的是,ftp_put()功能将永远覆盖现有的文件.相反,我建议您查看PHP move_uploaded_file

码

这是表格.在action属性中,我们指定一个文件,它将处理和处理所有文件.您需要使用表单的enctype属性的multipart / form-data值.

我几乎无处不在,更好的理解.

<form action="upload.PHP" method="post" enctype="multipart/form-data">
    File: <input type="file" name="upload-file" size="30" />
    <input type="submit" name="submit" value="Upload file" />
</form>

upload.PHP的

<?PHP
    // Used to determinated if the upload file is really a valid file
    $isValid = true;
    // The maximum allowed file upload size
    $maxFileSize = 1024000;
    //Allowed file extensions
    $extensions = array('gif','jpg','jpeg','png');
 
    // See if the Upload file button was pressed.
    if(isset($_POST['submit'])) {
        // See if there is a file waiting to be uploaded
        if(!empty($_FILES['upload-file']['name'])) {
 
            // Check for errors
            if(!$_FILES['upload-file']['error']) {
                // Renamed the file
                $renamedFile = strtolower($_FILES['upload-file']['tmp_name']);
 
                // Get the file extension
                $fileInfo = pathinfo($_FILES['upload-file']['name']);
 
                // Now vaidate it
                if (!in_array($fileInfo['extension'],$extensions)) {
                    $isValid = false;
                    echo "This file extension is not allowed";
                }
 
                // Validate that the file is not bigger than 1MB
                if($_FILES['upload-file']['size'] > $maxFileSize) {
                    $isValid = false;
                    echo "Your file's size is to large. The file should not be bigger than 1MB";
                }
 
                // If the file has passed all tests
                if($isValid)
                {
                    // Move it to where we want it to be
                    move_uploaded_file($_FILES['upload-file']['tmp_name'],'uploads/'.$renamedFile);
                    echo 'File was successfully uploaded!';
                }
            }
            // If there is an error show it
            else {
                echo 'There was an error file trying to upload the file:  '.$_FILES['upload-file']['error'];
            }
        }
    }

PHP FTP_PUT上传到目录

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