win_is_writable( string $path )
Workaround for Windows bug in is_writable() function
Description
PHP has issues with Windows ACL’s for determine if a directory is writable or not, this works around them by checking the ability to open files rather than relying upon PHP to interprate the OS ACL.
See also
Parameters
- $path
-
(string) (Required) Windows path to check for write-ability.
Return
(bool) Whether the path is writable.
Source
File: wp-includes/functions.php
function win_is_writable( $path ) {
if ( $path[strlen( $path ) - 1] == '/' ) { // if it looks like a directory, check a random file within the directory
return win_is_writable( $path . uniqid( mt_rand() ) . '.tmp');
} elseif ( is_dir( $path ) ) { // If it's a directory (and not a file) check a random file within the directory
return win_is_writable( $path . '/' . uniqid( mt_rand() ) . '.tmp' );
}
// check tmp file for read/write capabilities
$should_delete_tmp_file = !file_exists( $path );
$f = @fopen( $path, 'a' );
if ( $f === false )
return false;
fclose( $f );
if ( $should_delete_tmp_file )
unlink( $path );
return true;
}
Changelog
| Version | Description |
|---|---|
| WP-2.8.0 | Introduced. |