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is_writable

PHP function Edit on GitHub ✎

(PHP 4, PHP 5, PHP 7, PHP 8)

Tells whether the filename is writable

Description

is_writable(string $filename): bool

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').

Parameters

filename: The filename being checked.

Return Values

Returns true if the filename exists and is writable.

Errors/Exceptions Failure

Examples

is_writable() example

php

<?php
$filename = 'test.txt';
if (is_writable($filename)) {
    echo 'The file is writable';
} else {
    echo 'The file is not writable';
}
?>