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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 |
|---|---|
| 242 | $url = add_query_arg(array('package' => $file_upload->filename), 'update.php?action=upload-theme'); |
| 243 | $type = 'upload'; //Install plugin type, From Web or an Upload. |
| 244 | |
| 245 | $upgrader = new Theme_Upgrader( new Theme_Installer_Skin( compact('type', 'title', 'nonce', 'url') ) ); |
| 246 | $upgrader->install( $file_upload->package ); |
| 247 | |
| 248 | include('./admin-footer.php'); |
| 249 | |
| 250 | } else { |
| 251 | do_action('update-custom_' . $action); |
| 252 | } |
| 253 | } |
| 254 | |