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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 |
|---|---|
| 400 | * @param array $upload { |
| 401 | * Array of upload data. |
| 402 | * |
| 403 | * @type string $file Filename of the newly-uploaded file. |
| 404 | * @type string $url URL of the uploaded file. |
| 405 | * @type string $type File type. |
| 406 | * } |
| 407 | * @param string $context The type of upload action. Values include 'upload' or 'sideload'. |
| 408 | */ |
| 409 | return apply_filters( 'wp_handle_upload', array( |
| 410 | 'file' => $new_file, |
| 411 | 'url' => $url, |
| 412 | 'type' => $type |
| 413 | ), 'wp_handle_sideload' === $action ? 'sideload' : 'upload' ); |
| 414 | } |
| 415 | |
| 416 | /** |
| 417 | * Wrapper for _wp_handle_upload(), passes 'wp_handle_upload' action. |
| 418 | * |