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That is important for the purposes of building paths through concatenation to know that sys_get_temp_dir does not include a path separator at the end. So, sys_get_temp_dir() will return whatever your temp dir is set to, by default:
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Apr 28, 2025 · The sys_get_temp_dir () is an inbuilt function where the directory path for temporary files will be returned. Syntax: sys_get_temp_dir() Parameter: This function doesn't accept any parameter. Return Value: This function returns the path for the temporary directory. Example 1: This code demonstrates the sys_get_temp_dir () function.
Now for the problem: sys_get_temp_dir() should give back the temporary directory for php, which is /tmp be default on a linux system. For security reasons, this directory should reside in the open_basedir of userA. According to the php-source of 5.3.10, the sys_get_temp_dir() -function uses the environment variable TMPDIR to get this directory:
- Running a putenv('TMPDIR=/foo/bar') inside PHP seems to be able to affect the result of sys_get_temp_dir() . You could have an auto_prepend_file di...
- You have tagged your question cgi , however you are making use of php_admin_value open_basedir /home/userA/www/^^^^^^^^^^^^^^^which is a sett...
- According to this - 4 year old - bug , sys_get_temp_dir() won't work with virtual-hosts; so you can try to use only libraries that fixed this issue...
- Looking at the PHP source , sys_get_temp_dir() works with the following priority: If its value has been calculated before, the cached value is used...
- This is a bug in php 5.2 - specify temp dir by php.ini It's fixed in 5.5 Use this as a temporary solution:
- In case people end up here whos Problem is not solved with putenv... ... for me, it worked to set the sys_temp_dir using php's ini_set like this: $...
- It looks like you can change the value returned by sys_get_temp_dir() , I have just tried on apache 2.4 and php 5.6.27. Add a sys_temp_dir in the v...
Aug 18, 2025 · The sys_get_temp_dir () function is an indispensable tool in the PHP developer's toolkit. Its simplicity belies its power in providing a consistent, cross-platform solution for temporary file management. By understanding its intricacies and following best practices, you can enhance the portability, security, and efficiency of your PHP applications.
PHP 5 >= 5.2.1, PHP 7, PHP 8 sys_get_temp_dir - Returns directory path used for temporary files Manual Code Examples
Description sys_get_temp_dir ( ) : string Returns the path of the directory PHP stores temporary files in by default.
People also ask
What does SYS_get_temp_DIR() do?
Can TMPDIR / foo/bar be run inside PHP?
Is it possible to override the TMPDIR variable in PHP_get_temporary_directory?
Simple usage example of `sys_get_temp_dir ()`. The PHP function `sys_get_temp_dir ()` returns the file system path that is utilized for temporary files. It provides a convenient way to retrieve the directory path dynamically, allowing for improved flexibility and compatibility across different systems.
