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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 |
|---|---|
| 2355 | * Filters whether to treat the upload bits as an error. |
| 2356 | * |
| 2357 | * Passing a non-array to the filter will effectively short-circuit preparing |
| 2358 | * the upload bits, returning that value instead. |
| 2359 | * |
| 2360 | * @since 3.0.0 |
| 2361 | * |
| 2362 | * @param mixed $upload_bits_error An array of upload bits data, or a non-array error to return. |
| 2363 | */ |
| 2364 | $upload_bits_error = apply_filters( |
| 2365 | 'wp_upload_bits', |
| 2366 | array( |
| 2367 | 'name' => $name, |
| 2368 | 'bits' => $bits, |
| 2369 | 'time' => $time, |
| 2370 | ) |
| 2371 | ); |
| 2372 | if ( ! is_array( $upload_bits_error ) ) { |
| 2373 | $upload['error'] = $upload_bits_error; |