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tmpfileCria um arquivo temporário


resource tmpfile ( void )

Cria um arquivo temporário com um nome único em modo de leitura-gravação (w+) e retorna o manipulador do arquivo.

Para detalhes consulte a documentação do seu sistem na função tmpfile(3), assim como o header stdio.h.

Valor Retornado

Retorna o manipulador de arquivo, similar ao retornado pela fopen(), para o novo arquivo, ou FALSE em falha.


Exemplo #1 Exemplo da tmpfile()

fwrite($temp"escrevendo no arquivo temporario");
fclose($temp); // isto remove o arquivo

O exemplo acima irá imprimir:

writing to tempfile

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User Contributed Notes 6 notes

chris [at] pureformsolutions [dot] com
10 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:

# Upload
$fSetup = tmpfile();
    if (!
ftp_fput($ftp,"inc/",$fSetup,FTP_ASCII)) {
"<br /><i>Setup file NOT inserted</i><br /><br />";

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.
oremanj at gmail dot com
9 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
3 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:
= tempnam ('/tmp', 'some-prefix-');
if (
$f = fopen ($fn, 'w+');
unlink ($fn);  // even if fopen failed, because tempnam created the file
if ($f)
do_something_with_file_handle ($f);
David dot Crowe at cnp-wireless dot com
1 year ago
The phrase, "when the script ends" is not clear. Does this mean when the session ends (assuming the file is never explicitly closed)?
9 years ago
fseek() is important because if you forget about it you will upload empty file...

i had sth like that ^_^
kexianbin at diyism dot com
3 years ago
If you want to specify the extension name of tmp file:

=array_search('uri', @array_flip(stream_get_meta_data($GLOBALS[mt_rand()]=tmpfile())));
rename($tmp, $tmp.='.png');
register_shutdown_function(create_function('', "unlink('{$tmp}');"));
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