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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 |
|---|---|
| 37 | $x = new WP_Ajax_Response( array( |
| 38 | 'what' => 'autosave', |
| 39 | 'id' => $id, |
| 40 | 'data' => $message |
| 41 | ) ); |
| 42 | $x->send(); |
| 43 | } |
| 44 | |
| 45 | if ( !empty( $_REQUEST['action'] ) ) |
| 46 | do_action( 'wp_ajax_nopriv_' . $_REQUEST['action'] ); |
| 47 | |
| 48 | die('-1'); |
| 49 | } |
| 50 | |
| 51 | if ( isset( $_GET['action'] ) ) : |
| 52 | switch ( $action = $_GET['action'] ) : |
| 53 | case 'fetch-list' : |
| 54 | |
| 55 | $list_class = $_GET['list_args']['class']; |