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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 |
|---|---|
| 2363 | $function = apply_filters( 'wp_die_xmlrpc_handler', '_xmlrpc_wp_die_handler' ); |
| 2364 | } else { |
| 2365 | /** |
| 2366 | * Filter callback for killing WordPress execution for all non-AJAX, non-XML-RPC requests. |
| 2367 | * |
| 2368 | * @since 3.0.0 |
| 2369 | * |
| 2370 | * @param callback $function Callback function name. |
| 2371 | */ |
| 2372 | $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler' ); |
| 2373 | } |
| 2374 | |
| 2375 | call_user_func( $function, $message, $title, $args ); |
| 2376 | } |
| 2377 | |
| 2378 | /** |
| 2379 | * Kill WordPress execution and display HTML message with error message. |
| 2380 | * |
| 2381 | * This is the default handler for wp_die if you want a custom one for your |