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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 |
|---|---|
| 2283 | <?php |
| 2284 | |
| 2285 | /** |
| 2286 | * Fires on the post upload UI screen. |
| 2287 | * |
| 2288 | * Legacy (pre-3.5.0) media workflow hook. |
| 2289 | * |
| 2290 | * @since 2.6.0 |
| 2291 | */ |
| 2292 | do_action( 'post-upload-ui' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores |
| 2293 | } |
| 2294 | |
| 2295 | /** |
| 2296 | * Outputs the legacy media upload form for a given media type. |
| 2297 | * |
| 2298 | * @since 2.5.0 |
| 2299 | * |
| 2300 | * @param string $type |
| 2301 | * @param array $errors |