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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 |
|---|---|
| 2476 | $function = apply_filters( 'wp_die_xmlrpc_handler', '_xmlrpc_wp_die_handler' ); |
| 2477 | } else { |
| 2478 | /** |
| 2479 | * Filter callback for killing WordPress execution for all non-AJAX, non-XML-RPC requests. |
| 2480 | * |
| 2481 | * @since 3.0.0 |
| 2482 | * |
| 2483 | * @param callable $function Callback function name. |
| 2484 | */ |
| 2485 | $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler' ); |
| 2486 | } |
| 2487 | |
| 2488 | call_user_func( $function, $message, $title, $args ); |
| 2489 | } |
| 2490 | |
| 2491 | /** |
| 2492 | * Kill WordPress execution and display HTML message with error message. |
| 2493 | * |
| 2494 | * This is the default handler for wp_die if you want a custom one for your |