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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 88 | $new_path = $path; |
| 89 | |
| 90 | if ( ($uploads = wp_upload_dir()) && false === $uploads['error'] ) { |
| 91 | if ( 0 === strpos($new_path, $uploads['basedir']) ) { |
| 92 | $new_path = str_replace($uploads['basedir'], '', $new_path); |
| 93 | $new_path = ltrim($new_path, '/'); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | return apply_filters( '_wp_relative_upload_path', $new_path, $path ); |
| 98 | } |
| 99 | |
| 100 | /** |
| 101 | * Retrieve all children of the post parent ID. |
| 102 | * |
| 103 | * Normally, without any enhancements, the children would apply to pages. In the |
| 104 | * context of the inner workings of WordPress, pages, posts, and attachments |
| 105 | * share the same table, so therefore the functionality could apply to any one |
| 106 | * of them. It is then noted that while this function does not work on posts, it |