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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 |
|---|---|
| 1393 | * |
| 1394 | * Site is provided as context so that a list of network allowed themes can |
| 1395 | * be filtered further. |
| 1396 | * |
| 1397 | * @since 4.5.0 |
| 1398 | * |
| 1399 | * @param string[] $allowed_themes An array of theme stylesheet names. |
| 1400 | * @param int $blog_id ID of the site. |
| 1401 | */ |
| 1402 | $network = (array) apply_filters( 'network_allowed_themes', self::get_allowed_on_network(), $blog_id ); |
| 1403 | return $network + self::get_allowed_on_site( $blog_id ); |
| 1404 | } |
| 1405 | |
| 1406 | /** |
| 1407 | * Returns array of stylesheet names of themes allowed on the network. |
| 1408 | * |
| 1409 | * @since 3.4.0 |
| 1410 | * |
| 1411 | * @staticvar array $allowed_themes |