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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 |
|---|---|
| 389 | * @param array $upload { |
| 390 | * Array of upload data. |
| 391 | * |
| 392 | * @type string $file Filename of the newly-uploaded file. |
| 393 | * @type string $url URL of the uploaded file. |
| 394 | * @type string $type File type. |
| 395 | * } |
| 396 | * @param string $context The type of upload action. Values include 'upload' or 'sideload'. |
| 397 | */ |
| 398 | return apply_filters( 'wp_handle_upload', array( |
| 399 | 'file' => $new_file, |
| 400 | 'url' => $url, |
| 401 | 'type' => $type |
| 402 | ), 'wp_handle_sideload' === $action ? 'sideload' : 'upload' ); } |
| 403 | |
| 404 | /** |
| 405 | * Wrapper for _wp_handle_upload(), passes 'wp_handle_upload' action. |
| 406 | * |
| 407 | * @since 2.0.0 |