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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 |
|---|---|
| 1605 | if ( isset( $allowed_themes[ $blog_id ] ) ) { |
| 1606 | /** |
| 1607 | * Filters the array of themes allowed on the site. |
| 1608 | * |
| 1609 | * @since 4.5.0 |
| 1610 | * |
| 1611 | * @param string[] $allowed_themes An array of theme stylesheet names. |
| 1612 | * @param int $blog_id ID of the site. Defaults to current site. |
| 1613 | */ |
| 1614 | return (array) apply_filters( 'site_allowed_themes', $allowed_themes[ $blog_id ], $blog_id ); |
| 1615 | } |
| 1616 | |
| 1617 | $current = get_current_blog_id() == $blog_id; |
| 1618 | |
| 1619 | if ( $current ) { |
| 1620 | $allowed_themes[ $blog_id ] = get_option( 'allowedthemes' ); |
| 1621 | } else { |
| 1622 | switch_to_blog( $blog_id ); |
| 1623 | $allowed_themes[ $blog_id ] = get_option( 'allowedthemes' ); |
| Line | Code |
| 1656 | switch_to_blog( $blog_id ); |
| 1657 | update_option( 'allowedthemes', $allowed_themes[ $blog_id ] ); |
| 1658 | delete_option( 'allowed_themes' ); |
| 1659 | restore_current_blog(); |
| 1660 | } |
| 1661 | } |
| 1662 | } |
| 1663 | |
| 1664 | /** This filter is documented in wp-includes/class-wp-theme.php */ |
| 1665 | return (array) apply_filters( 'site_allowed_themes', $allowed_themes[ $blog_id ], $blog_id ); |
| 1666 | } |
| 1667 | |
| 1668 | /** |
| 1669 | * Enables a theme for all sites on the current network. |
| 1670 | * |
| 1671 | * @since 4.6.0 |
| 1672 | * |
| 1673 | * @param string|string[] $stylesheets Stylesheet name or array of stylesheet names. |
| 1674 | */ |