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Clarify the Documentation in win_is_writable() and move an inline comment to the Docblock, reduces confusion about what the function actually does. See #22900 

git-svn-id: http://core.svn.wordpress.org/trunk@23254 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Dion Hulse 2013-01-03 07:56:38 +00:00
parent 9f6638747d
commit a7bb4ac774
1 changed files with 11 additions and 7 deletions
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18
wp-includes/functions.php
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@ -1425,22 +1425,26 @@ function get_temp_dir() {
/**
* Workaround for Windows bug in is_writable() function
*
* 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 http://bugs.php.net/bug.php?id=27609
* @see http://bugs.php.net/bug.php?id=30931
*
* @since 2.8.0
*
* @param string $path
* @return bool
*/
function win_is_writable( $path ) {
/* will work in despite of Windows ACLs bug
* NOTE: use a trailing slash for folders!!!
* see http://bugs.php.net/bug.php?id=27609
* see http://bugs.php.net/bug.php?id=30931
*/
if ( $path[strlen( $path ) - 1] == '/' ) // recursively return a temporary file 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');
else if ( is_dir( $path ) )
else if ( 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' );