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tmpfile

(PHP 4, PHP 5, PHP 7)

tmpfileCrée un fichier temporaire

Description

tmpfile ( void ) : resource

Crée un fichier temporaire avec un nom unique, ouvert en écriture et lecture (w+), et retourne un pointeur de fichier.

Ce fichier sera automatiquement effacé lorsqu'il sera fermé (par exemple, en appelant la fonction fclose(), ou lorsqu'il n'y a plus de référence au gestionnaire de fichier retourné par la fonction tmpfile()), ou lorsque le script sera terminé.

Attention

Si le script se termine de manière innatendue, il se peut que le fichier temporaire ne soit pas supprimé.

Valeurs de retour

Retourne un pointeur de fichier, identique à celui retourné par la fonction fopen(), pour le nouveau fichier ou FALSE si une erreur survient.

Exemples

Exemple #1 Exemple avec tmpfile()

<?php
$temp 
tmpfile();
fwrite($temp"Écriture dans le fichier temporaire");
fseek($temp0);
echo 
fread($temp1024);
fclose($temp); // ceci va effacer le fichier
?>

L'exemple ci-dessus va afficher :

Écriture dans le fichier temporaire

Voir aussi

  • tempnam() - Crée un fichier avec un nom unique
  • sys_get_temp_dir() - Retourne le chemin du répertoire utilisé pour les fichiers temporaires

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User Contributed Notes 6 notes

up
34
bishop
1 year ago
To get the underlying file path of a tmpfile file pointer:

<?php
$file
= tmpfile();
$path = stream_get_meta_data($file)['uri']; // eg: /tmp/phpFx0513a
up
16
chris [at] pureformsolutions [dot] com
14 years ago
I found this function useful when uploading a file through FTP. One of the files I was uploading was input from a textarea on the previous page, so really there was no "file" to upload, this solved the problem nicely:

<?php
   
# Upload setup.inc
   
$fSetup = tmpfile();
   
fwrite($fSetup,$setup);
   
fseek($fSetup,0);
    if (!
ftp_fput($ftp,"inc/setup.inc",$fSetup,FTP_ASCII)) {
        echo
"<br /><i>Setup file NOT inserted</i><br /><br />";
    }
   
fclose($fSetup);
?>

The $setup variable is the contents of the textarea.

And I'm not sure if you need the fseek($temp,0); in there either, just leave it unless you know it doesn't effect it.
up
9
Anonymous
3 years ago
Since this function may not be working in some environments, here is a simple workaround:

function temporaryFile($name, $content)
{
    $file = DIRECTORY_SEPARATOR .
            trim(sys_get_temp_dir(), DIRECTORY_SEPARATOR) .
            DIRECTORY_SEPARATOR .
            ltrim($name, DIRECTORY_SEPARATOR);

    file_put_contents($file, $content);

    register_shutdown_function(function() use($file) {
        unlink($file);
    });

    return $file;
}
up
2
oremanj at gmail dot com
12 years ago
No, the fseek() is necessary - after writing to the file, the file pointer (I'll use "file pointer" to refer to the current position in the file, the thing you change with fseek()) is at the end of the file, and reading at the end of the file gives you EOF right away, which manifests itself as an empty upload.

Where you might be getting confused is in some systems' requirement that one seek or flush between reading and writing the same file.  fflush() satisfies that prerequisite, but it doesn't do anything about the file pointer, and in this case the file pointer needs moving.

-- Josh
up
0
elm at gmail dot nospamplease dot com
1 month ago
To get tmpfile contents:
<?php
  $tmpfile
= tmpfile();
 
$tmpfile_path = stream_get_meta_data($tmpfile)['uri'];
 
// ... write to tmpfile ...
 
$tmpfile_content = file_get_contents($tmpfile_path);
?>

Perhaps not the best way for production code, but good enough for logging or a quick var_dump() debug run.
up
-22
ssandor
6 years ago
Beware that PHP's tmpfile is not an equivalent of unix' tmpfile.
PHP (at least v. 5.3.17/linux I'm using now) creates a file in /tmp with prefix "php", and deletes that file on fclose or script termination.
So, if you want to be sure that you don't leave garbage even in case of a fatal error, or killed process, you shouldn't rely on this function.
Use the classical method of deleting the file after creation:
<?php
$fn
= tempnam ('/tmp', 'some-prefix-');
if (
$fn)
  {
   
$f = fopen ($fn, 'w+');
   
unlink ($fn);  // even if fopen failed, because tempnam created the file
   
if ($f)
      {
       
do_something_with_file_handle ($f);
      }
  }
?>
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