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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 |
|---|---|
| 2702 | $function = apply_filters( 'wp_die_xmlrpc_handler', '_xmlrpc_wp_die_handler' ); |
| 2703 | } else { |
| 2704 | /** |
| 2705 | * Filters the callback for killing WordPress execution for all non-Ajax, non-XML-RPC requests. |
| 2706 | * |
| 2707 | * @since 3.0.0 |
| 2708 | * |
| 2709 | * @param callable $function Callback function name. |
| 2710 | */ |
| 2711 | $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler' ); |
| 2712 | } |
| 2713 | |
| 2714 | call_user_func( $function, $message, $title, $args ); |
| 2715 | } |
| 2716 | |
| 2717 | /** |
| 2718 | * Kills WordPress execution and display HTML message with error message. |
| 2719 | * |
| 2720 | * This is the default handler for wp_die if you want a custom one for your |