Come rinominare un nome file dopo aver caricato con php?


Answers

Ti suggerisco di controllare la classe di caricamento file di Verot. Risana molto del dolore del caricamento di file tramite php e rende il tuo codice molto più leggibile / manutenibile.

Ecco il link alla classe e alla documentazione.

Per quanto riguarda la risposta precisa alla tua domanda: Per dare un nuovo nome a un file caricato, mettilo come secondo argomento nella tua funzione move_uploaded_file ().

Dal momento che si desidera mantenere l'estensione, memorizzarla prima in una variabile:

$ext = explode('.',$_FILES['uploaded']['name']);
$extension = $ext[1];

È possibile utilizzare il nome root del file per generare il nuovo nome (qui, con un timestamp aggiunto ad esso):

$newname = $ext[0].'_'.time();

Supponiamo che tu abbia caricato un file e che il nome della variabile di input del modulo sia "myfile.png" e diventerà "myfile_2343544.png";

Ora, unisci il percorso locale alla directory di destinazione, il $ newname var e l'estensione del file per impostare il secondo argomento della funzione:

$full_local_path = 'path/to/your/filefolder/'.$newname.'.'.$extension ;
move_uploaded_file($_FILES['uploaded']['tmp_name'], $full_local_path);
Question

Come rinominare il file prima o dopo il caricamento? Voglio solo rinominare il nome del file, non l'estensione.

$changeTXT = $_SESSION['username'];
$uploaderName = strtolower($changeTXT);
$changeTXT = strtolower($changeTXT);
$changeTXT = ucfirst($changeTXT);
$filelocation = $_POST['userfile'];
$filename = $_POST['filename'];
$max_size = $_POST['MAX_FILE_SIZE'];

$file = $_FILES['userfile'];

$allowedExtensions = array("wma", "mp3", "wav");

function isAllowedExtension($fileName) {
  global $allowedExtensions;

  return in_array(end(explode(".", $fileName)), $allowedExtensions);
}

if($file['error'] == UPLOAD_ERR_OK) {
  if(isAllowedExtension($file['name'])) {

$uploaddir = "uploads/".$uploaderName."/";

$uploadfile = $uploaddir . basename($_FILES['userfile']['name']);

if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {

    echo "Thank you for uploading your music!<br /><br />";

} else {

    echo "Your file did not upload.<br /><br />";

}

    echo "\n";

    echo "<a href='index.php'>Return</a> to index.<br /><br />$uploaddir";

} else {

    echo "You have tried to upload an invalid file type.<br /><br />";

  }

} else die("Cannot upload");



Quando lo fai

$uploadfile = $uploaddir . basename($_FILES['userfile']['name']);

if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {

Basta impostare $ uploadfile sull'intero percorso del nome file desiderato; cioè "uploads / mynewfilename.jpg"




    <?php

  /*
     Just change the $path variable to your uploads path
     and dont forget the  / at the end of the  path.

     The way this function works is .When the user submits the form
     the uniqueFilename() function checks to see if there is a filename
     in your uploads folder, that has the same name as the one you intend
     to upload. If it finds a filename that has the same name as the one you want to
     upload it goes through the next steps


        Step 1

    strrpos($arg1,$arg2) - we use it to find the location where upload path ends and where the filename begins

    $arg1 = the filepath including the filename ex. uploads/myFile.jpg
    $arg2 = basename($filename); what this does is it  strips the path from the string and returns only the filename.

    When we use strrpos($arg1,$arg2) we basically tell the function to find the position of the path and exclude the filename

    Step 2

    substr($arg1,$arg2,$arg3) - looks in a string and extrats only the parts from the string that you want. We use it now to extract the uploads path.

    $arg1 = the full path of the uploaded file. ex. uploads/myFile.jpg
    $arg2 = 0  because we want to start from the begginning of the string
    $arg3 = $pathlocation which is the location of where the uploadpath ends and the file beggins

    when we use substr() here we intend to extract the uploads path.

    Step 3

    basename($arg1) strips out a path and returns the filename

    - we use this to save the original filename

    Notice that so far we have the path to the files saved and also
    the filename with its extension. We also have the file extension (.jpg|.png) or whatever


    Step 4

    pathinfo() - extracts the extension from the filename

    Step 5

    we us strrpos() to find the location of the last dot ( . ) in the filename because in step 6
    we use this location to cut the string where the dot ( . ) is

    Step 6

    substr() gets the file without the extension

    Step 7
    substr() takes the filename without extension and clips out the last charcter
    so if the filename is myFile this function would return myFil

    Step 8
    substr() again we use it to save the last character of the file so
                if our file is called myFile it would return e.

    Step 9
    Here we check to see if the last character of our file is numeric.
    Why do this? Because if the last character of a file is numeric we can just add a number to the
    file and end up with a new file with an added number so our file is
    myFile1 the 1 is numeric so our intention is to add to it
    so my myFile1 would end up being myFile2. But what happens if our last character is not numeric?

    then we just add -1 to the file so that myFile would end up being myFile-1

    Step 10
    Since our filename exists in the database we must call the function uniqueFilename() again so that we can
    check and see if the new name exists in the database.

    This function basically keeps calling itself until it finds a filename that does not exists.
   */





    if(isset($_POST['submit'])){

    $path = "uploads/";

    $fullPath = $path.$_FILES['uploadFile']['name'];
    $full_local_path = $path.uniqueFilename($fullPath) ;
    move_uploaded_file($_FILES['uploadFile']['tmp_name'], $full_local_path);
    }
          /*
             * Function returns a unique filename
             * Param 1 is the path of the filename and the filename
             * returns filename with no path
             */
            function uniqueFilename($filepathAndFilename){

                // check to see if file exists
                if (file_exists($filepathAndFilename))
                {
                        /* step 1 */

                    //Get the path location without the basename
                  $filePathWithoutFilenameLocationInString = strrpos($filepathAndFilename,basename($filepathAndFilename));

                        /* step 2 */

                    //Get the path and cut the basename
                    $path = substr($filepathAndFilename,0,$filePathWithoutFilenameLocationInString);

                        /* Step 3*/
                    //Get the base filename
                    $filename = basename($filepathAndFilename);

                       /* Step 4 */
                       // get the extension
                    $fileExtension = pathinfo($filename, PATHINFO_EXTENSION);

                        /* Step 5 */
                    // find the position of the last dot
                    $dotLocation = strrpos($filename,'.');

                        /* Step 6 */
                    // Get the filename without the dot
                    $fileWithNoExtension = substr($filename,0,$dotLocation);

                        /* Step 7 */
                    //Get the name without the last character
                    $filenameMinusLastCharacter = substr($fileWithNoExtension,0,-1);

                       /* Step 8 */
                    //save the last character
                    $lastFilenameCharacter = substr($fileWithNoExtension,-1);

                        /* Step 9*/
                    //if the last character is numeric add 1
                    if (is_numeric($lastFilenameCharacter))
                    {
                        $newFilename = $path.$filenameMinusLastCharacter.($lastFilenameCharacter+1).'.'.$fileExtension;
                        //recursively call itself

                         /* Step 10*/
                        $results = uniqueFilename($newFilename);
                        return basename($results);
                    }else{

                        // if the last character is not numeric then add 1
                        $newFilename = $path.$fileWithNoExtension.'-1'.'.'.$fileExtension;

                            /* Step 10*/
                        //recursively call itself
                        $results = uniqueFilename($newFilename);
                        return basename($results);
                    }

                }
                return basename($filepathAndFilename);

            }
    ?>

    <!doctype html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Untitled Document</title>
    </head>

    <body>

    <form method="post" enctype="multipart/form-data"/>
    <label>Upload File</label>
    <input type="file" name="uploadFile"/>
    <input type="submit" name="submit" value="submit"/>
    </form>

    </body>
    </html>`enter code here`





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