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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 20 | |
| 21 | // screen_id is the same as $current_screen->id and the JS global 'pagenow' |
| 22 | if ( ! empty($_POST['screen_id']) ) |
| 23 | $screen_id = sanitize_key($_POST['screen_id']); |
| 24 | else |
| 25 | $screen_id = 'front'; |
| 26 | |
| 27 | if ( ! empty($_POST['data']) ) { |
| 28 | $data = wp_unslash( (array) $_POST['data'] ); |
| 29 | $response = apply_filters( 'heartbeat_nopriv_received', $response, $data, $screen_id ); |
| 30 | } |
| 31 | |
| 32 | $response = apply_filters( 'heartbeat_nopriv_send', $response, $screen_id ); |
| 33 | |
| 34 | // Allow the transport to be replaced with long-polling easily |
| 35 | do_action( 'heartbeat_nopriv_tick', $response, $screen_id ); |
| 36 | |
| 37 | // send the current time according to the server |
| 38 | $response['server_time'] = time(); |