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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 |
|---|---|
| 2437 | ); |
| 2438 | |
| 2439 | /** |
| 2440 | * Filter the default list of post mime types. |
| 2441 | * |
| 2442 | * @since 2.5.0 |
| 2443 | * |
| 2444 | * @param array $post_mime_types Default list of post mime types. |
| 2445 | */ |
| 2446 | return apply_filters( 'post_mime_types', $post_mime_types ); |
| 2447 | } |
| 2448 | |
| 2449 | /** |
| 2450 | * Check a MIME-Type against a list. |
| 2451 | * |
| 2452 | * If the wildcard_mime_types parameter is a string, it must be comma separated |
| 2453 | * list. If the real_mime_types is a string, it is also comma separated to |
| 2454 | * create the list. |
| 2455 | * |