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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 |
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217 | $new_path = $path; |
218 |
|
219 | if ( ($uploads = wp_upload_dir()) && false === $uploads['error'] ) { |
220 | if ( 0 === strpos($new_path, $uploads['basedir']) ) { |
221 | $new_path = str_replace($uploads['basedir'], '', $new_path); |
222 | $new_path = ltrim($new_path, '/'); |
223 | } |
224 | } |
225 |
|
226 | return apply_filters( '_wp_relative_upload_path', $new_path, $path ); |
227 | } |
228 |
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229 | /** |
230 | * Retrieve all children of the post parent ID. |
231 | * |
232 | * Normally, without any enhancements, the children would apply to pages. In the |
233 | * context of the inner workings of WordPress, pages, posts, and attachments |
234 | * share the same table, so therefore the functionality could apply to any one |
235 | * of them. It is then noted that while this function does not work on posts, it |