To get the underlying file path of a tmpfile file pointer:
<?php
$file = tmpfile();
$path = stream_get_meta_data($file)['uri']; // eg: /tmp/phpFx0513a
tmpfile
(PHP 4, PHP 5, PHP 7, PHP 8)
tmpfile — テンポラリファイルを作成する
説明
読み書き可、かつバイナリモード (w+b) でユニークな名前を有するテンポラリファイルを作成し、 ファイルハンドルを返します。
(fclose()を呼んだり、tmpfile() が返すファイルハンドルへの参照がなくなったりして) ファイルをクローズした場合や、スクリプトが終了したりしたときに、このファイルは自動的に削除されます。
警告
スクリプトが予期せず終了した場合、テンポラリファイルが削除されないかもしれません。
パラメータ
この関数にはパラメータはありません。
戻り値
ファイルのハンドルを返します。
これは、 fopen()
により返されるハンドルと同じものです。
失敗した場合に false を返します。
例
例1 tmpfile() の例
<?php
$temp = tmpfile();
fwrite($temp, "writing to tempfile");
fseek($temp, 0);
echo fread($temp, 1024);
fclose($temp); // ファイルを削除します
?>上の例の出力は以下となります。
writing to tempfile
add a note
User Contributed Notes 7 notes
bishop ¶
6 years ago
chris [at] pureformsolutions [dot] com ¶
19 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.
Anonymous ¶
8 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;
}
divinity76 at gmail dot com ¶
4 years ago
at least on Windows 10 with php 7.3.7, and Debian Linux with php 7.4.2,
the mode is not (as the documentation states) 'w+' , it is 'w+b'
(an important distinction when working on Windows systems)
elm at gmail dot nospamplease dot com ¶
5 years 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.
oremanj at gmail dot com ¶
17 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
ssandor ¶
12 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);
}
}
?>
