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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 |
|---|---|
| 1710 | if ( isset( $allowed_themes[ $blog_id ] ) ) { |
| 1711 | /** |
| 1712 | * Filters the array of themes allowed on the site. |
| 1713 | * |
| 1714 | * @since 4.5.0 |
| 1715 | * |
| 1716 | * @param string[] $allowed_themes An array of theme stylesheet names. |
| 1717 | * @param int $blog_id ID of the site. Defaults to current site. |
| 1718 | */ |
| 1719 | return (array) apply_filters( 'site_allowed_themes', $allowed_themes[ $blog_id ], $blog_id ); |
| 1720 | } |
| 1721 | |
| 1722 | $current = get_current_blog_id() === $blog_id; |
| 1723 | |
| 1724 | if ( $current ) { |
| 1725 | $allowed_themes[ $blog_id ] = get_option( 'allowedthemes' ); |
| 1726 | } else { |
| 1727 | switch_to_blog( $blog_id ); |
| 1728 | $allowed_themes[ $blog_id ] = get_option( 'allowedthemes' ); |
| Line | Code |
| 1763 | switch_to_blog( $blog_id ); |
| 1764 | update_option( 'allowedthemes', $allowed_themes[ $blog_id ] ); |
| 1765 | delete_option( 'allowed_themes' ); |
| 1766 | restore_current_blog(); |
| 1767 | } |
| 1768 | } |
| 1769 | } |
| 1770 | |
| 1771 | /** This filter is documented in wp-includes/class-wp-theme.php */ |
| 1772 | return (array) apply_filters( 'site_allowed_themes', $allowed_themes[ $blog_id ], $blog_id ); |
| 1773 | } |
| 1774 | |
| 1775 | /** |
| 1776 | * Returns the folder names of the block template directories. |
| 1777 | * |
| 1778 | * @since 6.4.0 |
| 1779 | * |
| 1780 | * @return string[] { |
| 1781 | * Folder names used by block themes. |