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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 |
|---|---|
| 140 | * |
| 141 | * @return array $themes Array of allowed themes. |
| 142 | */ |
| 143 | function get_allowed_themes() { |
| 144 | if ( !is_multisite() ) |
| 145 | return get_themes(); |
| 146 | |
| 147 | $themes = get_themes(); |
| 148 | $ct = current_theme_info(); |
| 149 | $allowed_themes = apply_filters("allowed_themes", get_site_allowed_themes() ); |
| 150 | if ( $allowed_themes == false ) |
| 151 | $allowed_themes = array(); |
| 152 | |
| 153 | $blog_allowed_themes = wpmu_get_blog_allowedthemes(); |
| 154 | if ( is_array( $blog_allowed_themes ) ) |
| 155 | $allowed_themes = array_merge( $allowed_themes, $blog_allowed_themes ); |
| 156 | |
| 157 | if ( isset( $allowed_themes[ esc_html( $ct->stylesheet ) ] ) == false ) |
| 158 | $allowed_themes[ esc_html( $ct->stylesheet ) ] = true; |