tmpfile

说明

resource tmpfile ( void )

以读写 (w+) 模式建立一个具有唯一文件名的临时文件，返回一个与 fopen() 所返回相似的文件句柄。文件会在关闭后（用 fclose()）自动被删除，或当脚本结束后。

详细信息请参考系统手册中的 tmpfile(3) 函数，以及 stdio.h 头文件。

例子 1. tmpfile() 例子
<?php $temp = tmpfile(); fwrite($temp, "writing to tempfile"); fseek($temp, 0); echo fread($temp, 1024); fclose($temp); // this removes the file ?>
上例将输出：
writing to tempfile

参见 tempnam()。

add a note User Contributed Notes

06-Sep-2006 02:53


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:



/* 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 09:05


fseek() is important because if you forget about it you will upload empty file...



i had sth like that ^_^

chris [at] pureformsolutions [dot] com
05-Oct-2005 03:14


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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