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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 |
|---|---|
| 879 | * @param array $upload { |
| 880 | * Array of upload data. |
| 881 | * |
| 882 | * @type string $file Filename of the newly-uploaded file. |
| 883 | * @type string $url URL of the uploaded file. |
| 884 | * @type string $type File type. |
| 885 | * } |
| 886 | * @param string $context The type of upload action. Values include 'upload' or 'sideload'. |
| 887 | */ |
| 888 | return apply_filters( 'wp_handle_upload', array( |
| 889 | 'file' => $new_file, |
| 890 | 'url' => $url, |
| 891 | 'type' => $type |
| 892 | ), 'wp_handle_sideload' === $action ? 'sideload' : 'upload' ); |
| 893 | } |
| 894 | |
| 895 | /** |
| 896 | * Wrapper for _wp_handle_upload(). |
| 897 | * |