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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 |
|---|---|
| 2587 | $function = apply_filters( 'wp_die_xmlrpc_handler', '_xmlrpc_wp_die_handler' ); |
| 2588 | } else { |
| 2589 | /** |
| 2590 | * Filters the callback for killing WordPress execution for all non-Ajax, non-XML-RPC requests. |
| 2591 | * |
| 2592 | * @since 3.0.0 |
| 2593 | * |
| 2594 | * @param callable $function Callback function name. |
| 2595 | */ |
| 2596 | $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler' ); |
| 2597 | } |
| 2598 | |
| 2599 | call_user_func( $function, $message, $title, $args ); |
| 2600 | } |
| 2601 | |
| 2602 | /** |
| 2603 | * Kills WordPress execution and display HTML message with error message. |
| 2604 | * |
| 2605 | * This is the default handler for wp_die if you want a custom one for your |