Come rinominare un nome file dopo aver caricato con php?

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"); 

Answer 1

Quando si utilizza move_uploaded_file si arriva a scegliere il nome del file, in modo da poter scegliere quello che vuoi.

Quando si carica il file, inserito in una directory temporanea con un nome temporaneo, move_uploaded_file() consente di spostare quel file e in questo è necessario impostare anche il nome del file.

Answer 2

Quando si esegue

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

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

Basta impostare $ UploadFile per l'intero percorso del nome del file desiderato; cioè "uploads/mynewfilename.jpg"

Answer 3

Perché non basta salvarlo con un nome diverso:

basta cambiare il nome del $ UploadFile variabile:

$uploadfile = $uploaddir . "somefilename" . end(explode(".", $file['name'])); 

non sarebbe male se ti rifatti un po 'il tuo codice.

Answer 4

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 lo link to the class e la documentazione.

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

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

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

Si potrebbe utilizzare il nome di root file per generare il nuovo nome (qui, con un timestamp aggiunto ad esso):

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

Dire che hai caricato un file, e il vostro modulo di input nome della variabile è "myfile.png" diventerà 'myfile_2343544.png';

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

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

Answer 5

È possibile utilizzare il secondo parametro in move_uploaded_file per impostare il nome del file. Il primo parametro è il nome file del file nella cartella/tmp e il secondo parametro è la dir del file e il nuovo nome file.

move_uploaded_file($_FILES['file']['tmp_name'], "/new/file/dir/".[the new file name]); 

So che questa è una domanda vecchia ma non c'era una risposta chiara.

Answer 6

<?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`