通过nginx访问时，php在/tmp/systemd-private-nABCDE/tmp中具有自己的/tmp [英] Php has its own /tmp in /tmp/systemd-private-nABCDE/tmp when accessed through nginx

问题描述

我发现有关php和/tmp文件夹的奇怪行为. Php与/tmp一起使用时，将使用另一个文件夹. PHP 5.6.7，Nginx，PHP-FPM.

I found strange behaviour concerning php and /tmp folder. Php uses another folder when it works with /tmp. Php 5.6.7, nginx, php-fpm.

我以两种方式执行相同的脚本:通过浏览器和通过Shell.但是，通过浏览器启动文件时，该文件不在实际的/tmp文件夹中:

I execute the same script in two ways: via browser and via shell. But when it is launched via browser, file is not in real /tmp folder:

<?php
$name = date("His");

echo "File /tmp/$name.txt\n";

shell_exec('echo "123" > /tmp/'.$name.'.txt');

var_dump(file_exists('/tmp/'.$name.'.txt'));

var_dump(shell_exec('cat /etc/*release | tail -n 1'));

php -f script.php

File /tmp/185617.txt
bool(true)
string(38) "CentOS Linux release 7.0.1406 (Core)

文件在哪里?在/tmp

Where is the file? In /tmp

$ find / -name 185617.txt
/tmp/185617.txt

如果通过http://myserver.ru/script.php访问它，我会得到

If access it via http://myserver.ru/script.php I get

File /tmp/185212.txt
bool(true)
string(38) "CentOS Linux release 7.0.1406 (Core)

但是文件在哪里?

$ find / -name 185212.txt
/tmp/systemd-private-nABCDE/tmp/185212.txt

为什么php认为/tmp应该在/tmp/systemd-private-nABCDE/tmp中?

Why does php thinks that /tmp should be in /tmp/systemd-private-nABCDE/tmp?

推荐答案

因为 systemd配置为为nginx提供私有/tmp .如果出于某些原因必须使用系统/tmp，则需要修改.service文件以读取"PrivateTmp = no".

Because systemd is configured to give nginx a private /tmp. If you must use the system /tmp instead for some reason then you will need to modify the .service file to read "PrivateTmp=no".

这篇关于通过nginx访问时，php在/tmp/systemd-private-nABCDE/tmp中具有自己的/tmp的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！