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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 |
|---|---|
| 1256 | if ( isset( $allowed_themes[ $blog_id ] ) ) { |
| 1257 | /** |
| 1258 | * Filter the array of themes allowed on the site. |
| 1259 | * |
| 1260 | * @since 4.5.0 |
| 1261 | * |
| 1262 | * @param array $allowed_themes An array of theme stylesheet names. |
| 1263 | * @param int $blog_id ID of the site. Defaults to current site. |
| 1264 | */ |
| 1265 | return (array) apply_filters( 'site_allowed_themes', $allowed_themes[ $blog_id ], $blog_id ); |
| 1266 | } |
| 1267 | |
| 1268 | $current = $blog_id == get_current_blog_id(); |
| 1269 | |
| 1270 | if ( $current ) { |
| 1271 | $allowed_themes[ $blog_id ] = get_option( 'allowedthemes' ); |
| 1272 | } else { |
| 1273 | switch_to_blog( $blog_id ); |
| 1274 | $allowed_themes[ $blog_id ] = get_option( 'allowedthemes' ); |
| Line | Code |
| 1306 | switch_to_blog( $blog_id ); |
| 1307 | update_option( 'allowedthemes', $allowed_themes[ $blog_id ] ); |
| 1308 | delete_option( 'allowed_themes' ); |
| 1309 | restore_current_blog(); |
| 1310 | } |
| 1311 | } |
| 1312 | } |
| 1313 | |
| 1314 | /** This filter is documented in wp-includes/class-wp-theme.php */ |
| 1315 | return (array) apply_filters( 'site_allowed_themes', $allowed_themes[ $blog_id ], $blog_id ); |
| 1316 | } |
| 1317 | |
| 1318 | /** |
| 1319 | * Sorts themes by name. |
| 1320 | * |
| 1321 | * @since 3.4.0 |
| 1322 | * |
| 1323 | * @static |
| 1324 | * @access public |