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1. www.php.net › manual › enPHP: is_writable - Manual

   www.php.net › manual › en

   Returns true if the filename exists and is writable. The filename argument may be a directory name allowing you to check if a directory is writable. Keep in mind that PHP may be accessing the file as the user id that the web server runs as (often 'nobody').

2. www.w3schools.com › php › func_filesystem_isPHP is_writable () Function - W3Schools

   www.w3schools.com › php › func_filesystem_is

   Definition and Usage The is_writable () function checks whether the specified filename is writable. Note: The result of this function is cached. Use clearstatcache () to clear the cache. Syntax is_writable (file)

3. www.geeksforgeeks.org › php › php-is_writable-functionPHP | is_writable () Function - GeeksforGeeks

   www.geeksforgeeks.org › php › php-is_writable-function

   Jul 11, 2025 · The is_writable () function in PHP used to check whether the specified file is writable or not. The name of the file is sent as a parameter to the is_writable () function and it returns True if the filename exists and is writable.

4. zetcode.com › php-filesystem › is-writablePHP is_writable - Checking File Writability in PHP - ZetCode

   zetcode.com › php-filesystem › is-writable

   Apr 3, 2025 · PHP is_writable function tutorial shows how to check if a file or directory is writable in PHP. Learn is_writable with practical examples.

5. www.slingacademy.com › article › php-how-to-check-ifPHP: How to check if a file is writable (2 approaches)

   www.slingacademy.com › article › php-how-to-check-if

   Jan 13, 2024 · In summary, checking if a file is writable in PHP requires understanding the file system permissions and knowing the functions and tools provided by PHP to determine these permissions. Practical application of is_writable() and fileperms() functions, along with best practices in permissions management, is essential for the secure and effective management of file writability within your PHP ...

6. www.tutorialspoint.com › php › php_function_isPHP is_writable Function - Online Tutorials Library

   www.tutorialspoint.com › php › php_function_is

   Discover how to use the PHP is_writable function effectively with examples. Check file and directory write permissions easily.

7. People also ask

   What is is_writable() function in PHP?

   • Parameters Used: The is_writable () function in PHP accepts one parameter. file : It is a mandatory parameter which specifies the file. Return Value: It returns True if the filename exists and is writable. Exceptions: An E_WARNING is emitted on failure.

   PHP | is_writable() Function - GeeksforGeeks

   www.geeksforgeeks.org/php/php-is_writable-function/

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   What does 'writable' mean in PHP?

   • Understanding these is key to debugging issues and enabling desired file operations within your PHP applications. A file’s ‘writable’ status means the file system grants permission to the server or PHP script to make changes to the file – such as modifying its contents or deleting it.

   PHP: How to check if a file is writable (2 approaches)

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   How to check if a file is writable in PHP?

   • The is_writable () function in PHP used to check whether the specified file is writable or not. The name of the file is sent as a parameter to the is_writable () function and it returns True if the filename exists and is writable.

   PHP | is_writable() Function - GeeksforGeeks

   www.geeksforgeeks.org/php/php-is_writable-function/

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   Is a PHP file writable?

   • If the file is writable by the PHP process, is_writable() returns true; otherwise, it returns false. There are caveats to be aware of when using is_writable(). Filesystem permissions, safe mode restrictions (if safe mode is enabled on a legacy PHP setup), and the PHP process’ ownership of the file can all impact the result.

   PHP: How to check if a file is writable (2 approaches)

   www.slingacademy.com/article/php-how-to-check-if-a-file-is-writable/

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8. php-safari.com › function › is_writablePHP function - is_writable - PHP Safari

   php-safari.com › function › is_writable

   is_writable Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8 Tells whether the filename is writable Alias is_writeable