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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 1509 | if ( isset( $allowed_themes[ $blog_id ] ) ) { |
| 1510 | /** |
| 1511 | * Filters the array of themes allowed on the site. |
| 1512 | * |
| 1513 | * @since 4.5.0 |
| 1514 | * |
| 1515 | * @param string[] $allowed_themes An array of theme stylesheet names. |
| 1516 | * @param int $blog_id ID of the site. Defaults to current site. |
| 1517 | */ |
| 1518 | return (array) apply_filters( 'site_allowed_themes', $allowed_themes[ $blog_id ], $blog_id ); |
| 1519 | } |
| 1520 | |
| 1521 | $current = get_current_blog_id() == $blog_id; |
| 1522 | |
| 1523 | if ( $current ) { |
| 1524 | $allowed_themes[ $blog_id ] = get_option( 'allowedthemes' ); |
| 1525 | } else { |
| 1526 | switch_to_blog( $blog_id ); |
| 1527 | $allowed_themes[ $blog_id ] = get_option( 'allowedthemes' ); |
| Line | Code |
| 1560 | switch_to_blog( $blog_id ); |
| 1561 | update_option( 'allowedthemes', $allowed_themes[ $blog_id ] ); |
| 1562 | delete_option( 'allowed_themes' ); |
| 1563 | restore_current_blog(); |
| 1564 | } |
| 1565 | } |
| 1566 | } |
| 1567 | |
| 1568 | /** This filter is documented in wp-includes/class-wp-theme.php */ |
| 1569 | return (array) apply_filters( 'site_allowed_themes', $allowed_themes[ $blog_id ], $blog_id ); |
| 1570 | } |
| 1571 | |
| 1572 | /** |
| 1573 | * Enables a theme for all sites on the current network. |
| 1574 | * |
| 1575 | * @since 4.6.0 |
| 1576 | * |
| 1577 | * @param string|string[] $stylesheets Stylesheet name or array of stylesheet names. |
| 1578 | */ |