WordPress hook directory
upload_dir
Description
Applied to the directory to be used for uploads calculated by the wp_upload_dir function. Filter function argument is an array with components "dir" (the upload directory path), "url" (the URL of the upload directory), and "error" (which you can set to true if you want to generate an error).
This description was scraped automatically from the WordPress filter reference 
or action reference . If it looks like this is the wrong description, please tell me so I can fix my code.
WordPress version history for upload_dir
This database has information for all major versions from WP 1.2.1 through 2.6. (Note that some intermediate versions are not indexed, particularly 2.0.1 through 2.0.10.) If 2.6 does not show up below, then this hook is deprecated.
| Version | File | Type | |
|---|---|---|---|
| 2.0 | wp-includes/functions-post.php | View hook in source | filter |
| 2.0.11 | wp-includes/functions-post.php | View hook in source | filter |
| 2.1 | wp-includes/functions.php | View hook in source | filter |
| 2.1.3 | wp-includes/functions.php | View hook in source | filter |
| 2.2 | wp-includes/functions.php | View hook in source | filter |
| 2.2.1 | wp-includes/functions.php | View hook in source | filter |
| 2.2.2 | wp-includes/functions.php | View hook in source | filter |
| 2.2.3 | wp-includes/functions.php | View hook in source | filter |
| 2.3 | wp-includes/functions.php | View hook in source | filter |
| 2.3.1 | wp-includes/functions.php | View hook in source | filter |
| 2.3.2 | wp-includes/functions.php | View hook in source | filter |
| 2.3.3 | wp-includes/functions.php | View hook in source | filter |
| 2.5 | wp-includes/functions.php | View hook in source | filter |
| 2.6 | wp-includes/functions.php | View hook in source | filter |
Related Hooks
We find related hooks using word stems. upload_dir has 2 significant word stem(s): upload, dir. Note that some of the hooks below may not appear in all versions of WP.