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touch> <tempnam
[edit] Last updated: Sat, 12 May 2012

view this page in

tmpfile

(PHP 4, PHP 5)

tmpfileCreates a temporary file

Description

resource tmpfile ( void )

Creates a temporary file with a unique name in read-write (w+) mode and returns a file handle .

The file is automatically removed when closed (using fclose()), or when the script ends.

For details, consult your system documentation on the tmpfile(3) function, as well as the stdio.h header file.

Return Values

Returns a file handle, similar to the one returned by fopen(), for the new file or FALSE on failure.

Examples

Example #1 tmpfile() example

<?php
$temp 
tmpfile();
fwrite($temp"writing to tempfile");
fseek($temp0);
echo 
fread($temp1024);
fclose($temp); // this removes the file
?>

The above example will output:

writing to tempfile

See Also



touch> <tempnam
[edit] Last updated: Sat, 12 May 2012
 
add a note add a note User Contributed Notes tmpfile
kexianbin at diyism dot com 22-Nov-2011 07:24
A clean method to use temporary file:

<?php
$tmp
=array_search('uri', @array_flip(stream_get_meta_data($GLOBALS[mt_rand()]=tmpfile())));
file_put_contents($tmp, 'hello');
echo
file_get_contents($tmp);
?>

without need to fclose the tmp file, it will be deleted while the php ends.
o_O Tync 20-Apr-2007 10:26
Remember, that open_basedir affects this function. You will get an error:

Warning: tmpfile() [function.tmpfile]: open_basedir restriction in effect. File(/var/tmp) is not within the allowed path(s): ....blablabla =)
oremanj at gmail dot com 08-Apr-2007 11:46
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
zlynx at acm dot org 13-Mar-2007 05:02
I am fairly sure that the seek just flushes the data from the memory buffers to the file.  fflush() should give you the same effect.
05-Sep-2006 11:53
By the way, this function is really useful for libcurl's CURLOPT_PUT feature if what you're trying to PUT is a string.   For example:

<?php
/* Create a cURL handle. */
$ch = curl_init();

/* Prepare the data for HTTP PUT. */
$putString = "Hello, world!";
$putData = tmpfile();
fwrite($putData, $putString);
fseek($putData, 0);

/* Set cURL options. */
curl_setopt($ch, CURLOPT_URL, "http://www.example.com");
curl_setopt($ch, CURLOPT_PUT, true);
curl_setopt($ch, CURLOPT_INFILE, $putData);
curl_setopt($ch, CURLOPT_INFILESIZE, strlen($putString));
/* ... (other curl options) ... */

/* Execute the PUT and clean up */
$result = curl_exec($ch);
fclose($putData);
curl_close($ch);
?>
03-Aug-2006 06:05
fseek() is important because if you forget about it you will upload empty file...

i had sth like that ^_^
chris [at] pureformsolutions [dot] com 04-Oct-2005 12:14
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.

 
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